13609413 has 12 divisors (see below), whose sum is σ = 19839820. Its totient is φ = 8989056.

The previous prime is 13609373. The next prime is 13609423. The reversal of 13609413 is 31490631.

13609413 is a `hidden beast` number, since 13 + 609 + 41 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7935489 + 5673924 = 2817^2 + 2382^2 .

It is not a de Polignac number, because 13609413 - 2⁸ = 13609157 is a prime.

It is a super-2 number, since 2×13609413² = 370432244409138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13609423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5956 + ... + 7917.

Almost surely, 2^13609413 is an apocalyptic number.

It is an amenable number.

13609413 is a deficient number, since it is larger than the sum of its proper divisors (6230407).

13609413 is a wasteful number, since it uses less digits than its factorization.

13609413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13988 (or 13985 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 13609413 is about 3689.0937911634. The cubic root of 13609413 is about 238.7516955738.

The spelling of 13609413 in words is "thirteen million, six hundred nine thousand, four hundred thirteen".