36459981 has 12 divisors (see below), whose sum is σ = 52827840. Its totient is φ = 24231240.

The previous prime is 36459979. The next prime is 36460013. The reversal of 36459981 is 18995463.

It is a happy number.

36459981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36459981 - 2¹ = 36459979 is a prime.

It is a super-2 number, since 2×36459981² = 2658660429040722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36459961) 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 11 ways as a sum of consecutive naturals, for example, 3141 + ... + 9098.

It is an arithmetic number, because the mean of its divisors is an integer number (4402320).

Almost surely, 2^36459981 is an apocalyptic number.

It is an amenable number.

36459981 is a deficient number, since it is larger than the sum of its proper divisors (16367859).

36459981 is a wasteful number, since it uses less digits than its factorization.

36459981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12576 (or 12573 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 36459981 is about 6038.2100824665. The cubic root of 36459981 is about 331.5930957523.

The spelling of 36459981 in words is "thirty-six million, four hundred fifty-nine thousand, nine hundred eighty-one".