16955979 has 8 divisors (see below), whose sum is σ = 22634640. Its totient is φ = 11290656.

The previous prime is 16955957. The next prime is 16955993. The reversal of 16955979 is 97955961.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-16955979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16955909) 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 7 ways as a sum of consecutive naturals, for example, 157 + ... + 5825.

It is an arithmetic number, because the mean of its divisors is an integer number (2829330).

Almost surely, 2^16955979 is an apocalyptic number.

16955979 is a deficient number, since it is larger than the sum of its proper divisors (5678661).

16955979 is an equidigital number, since it uses as much as digits as its factorization.

16955979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669.

The product of its digits is 765450, while the sum is 51.

The square root of 16955979 is about 4117.7638348987. The cubic root of 16955979 is about 256.9060252839.

The spelling of 16955979 in words is "sixteen million, nine hundred fifty-five thousand, nine hundred seventy-nine".