15964049 has 4 divisors (see below), whose sum is σ = 16039920. Its totient is φ = 15888180.

The previous prime is 15964033. The next prime is 15964061. The reversal of 15964049 is 94046951.

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 15964049 - 2⁴ = 15964033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15964099) 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, 37619 + ... + 38040.

It is an arithmetic number, because the mean of its divisors is an integer number (4009980).

Almost surely, 2^15964049 is an apocalyptic number.

It is an amenable number.

15964049 is a deficient number, since it is larger than the sum of its proper divisors (75871).

15964049 is an equidigital number, since it uses as much as digits as its factorization.

15964049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75870.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 15964049 is about 3995.5035977959. The cubic root of 15964049 is about 251.7953375231.

The spelling of 15964049 in words is "fifteen million, nine hundred sixty-four thousand, forty-nine".