17320979 has 12 divisors (see below), whose sum is σ = 18942696. Its totient is φ = 15829632.

The previous prime is 17320973. The next prime is 17320991. The reversal of 17320979 is 97902371.

It is not a de Polignac number, because 17320979 - 2¹⁶ = 17255443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17320973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18644 + ... + 19550.

It is an arithmetic number, because the mean of its divisors is an integer number (1578558).

Almost surely, 2^17320979 is an apocalyptic number.

17320979 is a deficient number, since it is larger than the sum of its proper divisors (1621717).

17320979 is a wasteful number, since it uses less digits than its factorization.

17320979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 17320979 is about 4161.8480270188. The cubic root of 17320979 is about 258.7363685476.

The spelling of 17320979 in words is "seventeen million, three hundred twenty thousand, nine hundred seventy-nine".