16775979 has 8 divisors (see below), whose sum is σ = 24401472. Its totient is φ = 10167240.

The previous prime is 16775963. The next prime is 16775989. The reversal of 16775979 is 97957761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16775979 - 2⁴ = 16775963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16775909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254149 + ... + 254214.

It is an arithmetic number, because the mean of its divisors is an integer number (3050184).

Almost surely, 2^16775979 is an apocalyptic number.

16775979 is a deficient number, since it is larger than the sum of its proper divisors (7625493).

16775979 is a wasteful number, since it uses less digits than its factorization.

16775979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508377.

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

The square root of 16775979 is about 4095.8489962400. The cubic root of 16775979 is about 255.9937081380.

The spelling of 16775979 in words is "sixteen million, seven hundred seventy-five thousand, nine hundred seventy-nine".