15948979 has 2 divisors, whose sum is σ = 15948980. Its totient is φ = 15948978.

The previous prime is 15948953. The next prime is 15948983. The reversal of 15948979 is 97984951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15948979 - 2⁷ = 15948851 is a prime.

It is a super-2 number, since 2×15948979² = 508739862284882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15948379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7974489 + 7974490.

It is an arithmetic number, because the mean of its divisors is an integer number (7974490).

Almost surely, 2^15948979 is an apocalyptic number.

15948979 is a deficient number, since it is larger than the sum of its proper divisors (1).

15948979 is an equidigital number, since it uses as much as digits as its factorization.

15948979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 52.

The square root of 15948979 is about 3993.6172826148. The cubic root of 15948979 is about 251.7160813065.

The spelling of 15948979 in words is "fifteen million, nine hundred forty-eight thousand, nine hundred seventy-nine".