16979345 has 16 divisors (see below), whose sum is σ = 21986640. Its totient is φ = 12539904.

The previous prime is 16979329. The next prime is 16979353. The reversal of 16979345 is 54397961.

It can be written as a sum of positive squares in 8 ways, for example, as 2226064 + 14753281 = 1492^2 + 3841^2 .

It is a cyclic number.

It is not a de Polignac number, because 16979345 - 2⁴ = 16979329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16979296 and 16979305.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2621 + ... + 6389.

It is an arithmetic number, because the mean of its divisors is an integer number (1374165).

Almost surely, 2^16979345 is an apocalyptic number.

It is an amenable number.

16979345 is a deficient number, since it is larger than the sum of its proper divisors (5007295).

16979345 is a wasteful number, since it uses less digits than its factorization.

16979345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844.

The product of its digits is 204120, while the sum is 44.

The square root of 16979345 is about 4120.6000776586. The cubic root of 16979345 is about 257.0239799575.

The spelling of 16979345 in words is "sixteen million, nine hundred seventy-nine thousand, three hundred forty-five".