16979577 has 4 divisors (see below), whose sum is σ = 22639440. Its totient is φ = 11319716.

The previous prime is 16979569. The next prime is 16979591. The reversal of 16979577 is 77597961.

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 16979577 - 2³ = 16979569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16979077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2829927 + ... + 2829932.

It is an arithmetic number, because the mean of its divisors is an integer number (5659860).

Almost surely, 2^16979577 is an apocalyptic number.

It is an amenable number.

16979577 is a deficient number, since it is larger than the sum of its proper divisors (5659863).

16979577 is an equidigital number, since it uses as much as digits as its factorization.

16979577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5659862.

The product of its digits is 833490, while the sum is 51.

The square root of 16979577 is about 4120.6282288020. The cubic root of 16979577 is about 257.0251505816.

The spelling of 16979577 in words is "sixteen million, nine hundred seventy-nine thousand, five hundred seventy-seven".