15669413 has 4 divisors (see below), whose sum is σ = 15867840. Its totient is φ = 15470988.

The previous prime is 15669373. The next prime is 15669419. The reversal of 15669413 is 31496651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15669413 - 2¹² = 15665317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15669419) 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, 99095 + ... + 99252.

It is an arithmetic number, because the mean of its divisors is an integer number (3966960).

Almost surely, 2^15669413 is an apocalyptic number.

It is an amenable number.

15669413 is a deficient number, since it is larger than the sum of its proper divisors (198427).

15669413 is an equidigital number, since it uses as much as digits as its factorization.

15669413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198426.

The product of its digits is 19440, while the sum is 35.

The square root of 15669413 is about 3958.4609382941. The cubic root of 15669413 is about 250.2366452587.

The spelling of 15669413 in words is "fifteen million, six hundred sixty-nine thousand, four hundred thirteen".