36013409 has 4 divisors (see below), whose sum is σ = 36103620. Its totient is φ = 35923200.

The previous prime is 36013391. The next prime is 36013427. The reversal of 36013409 is 90431063.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (36013391) and next prime (36013427).

It can be written as a sum of positive squares in 2 ways, for example, as 34810000 + 1203409 = 5900^2 + 1097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36013409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36013459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44504 + ... + 45305.

It is an arithmetic number, because the mean of its divisors is an integer number (9025905).

Almost surely, 2^36013409 is an apocalyptic number.

It is an amenable number.

36013409 is a deficient number, since it is larger than the sum of its proper divisors (90211).

36013409 is an equidigital number, since it uses as much as digits as its factorization.

36013409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90210.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 36013409 is about 6001.1173126344. The cubic root of 36013409 is about 330.2337156732.

The spelling of 36013409 in words is "thirty-six million, thirteen thousand, four hundred nine".