16979387 has 2 divisors, whose sum is σ = 16979388. Its totient is φ = 16979386.

The previous prime is 16979383. The next prime is 16979401. The reversal of 16979387 is 78397961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16979387 - 2² = 16979383 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16979383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8489693 + 8489694.

It is an arithmetic number, because the mean of its divisors is an integer number (8489694).

Almost surely, 2^16979387 is an apocalyptic number.

16979387 is a deficient number, since it is larger than the sum of its proper divisors (1).

16979387 is an equidigital number, since it uses as much as digits as its factorization.

16979387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 50.

The square root of 16979387 is about 4120.6051740005. The cubic root of 16979387 is about 257.0241918816.

The spelling of 16979387 in words is "sixteen million, nine hundred seventy-nine thousand, three hundred eighty-seven".