36039961 has 4 divisors (see below), whose sum is σ = 37014052. Its totient is φ = 35065872.

The previous prime is 36039937. The next prime is 36039967. The reversal of 36039961 is 16993063.

36039961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16993063 = 587 ⋅28949.

It can be written as a sum of positive squares in 2 ways, for example, as 15054400 + 20985561 = 3880^2 + 4581^2 .

It is a cyclic number.

It is not a de Polignac number, because 36039961 - 2⁹ = 36039449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 974053 = 36039961 / (3 + 6 + 0 + 3 + 9 + 9 + 6 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36039961.

It is not an unprimeable number, because it can be changed into a prime (36039967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486990 + ... + 487063.

It is an arithmetic number, because the mean of its divisors is an integer number (9253513).

Almost surely, 2^36039961 is an apocalyptic number.

It is an amenable number.

36039961 is a deficient number, since it is larger than the sum of its proper divisors (974091).

36039961 is an equidigital number, since it uses as much as digits as its factorization.

36039961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974090.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 36039961 is about 6003.3291597246. The cubic root of 36039961 is about 330.3148540772.

The spelling of 36039961 in words is "thirty-six million, thirty-nine thousand, nine hundred sixty-one".