16979456 has 40 divisors (see below), whose sum is σ = 36549744. Its totient is φ = 7833600.

The previous prime is 16979441. The next prime is 16979467. The reversal of 16979456 is 65497961.

It is a self number, because there is not a number n which added to its sum of digits gives 16979456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5381 + ... + 7931.

Almost surely, 2^16979456 is an apocalyptic number.

16979456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16979456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18274872).

16979456 is an abundant number, since it is smaller than the sum of its proper divisors (19570288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16979456 is an equidigital number, since it uses as much as digits as its factorization.

16979456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582 (or 2566 counting only the distinct ones).

The product of its digits is 408240, while the sum is 47.

The square root of 16979456 is about 4120.6135465486. The cubic root of 16979456 is about 257.0245400419.

The spelling of 16979456 in words is "sixteen million, nine hundred seventy-nine thousand, four hundred fifty-six".