38916979 has 2 divisors, whose sum is σ = 38916980. Its totient is φ = 38916978.

The previous prime is 38916971. The next prime is 38917001. The reversal of 38916979 is 97961983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38916979 - 2³ = 38916971 is a prime.

It is not a weakly prime, because it can be changed into another prime (38916971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19458489 + 19458490.

It is an arithmetic number, because the mean of its divisors is an integer number (19458490).

Almost surely, 2^38916979 is an apocalyptic number.

38916979 is a deficient number, since it is larger than the sum of its proper divisors (1).

38916979 is an equidigital number, since it uses as much as digits as its factorization.

38916979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 52.

The square root of 38916979 is about 6238.3474574602. The cubic root of 38916979 is about 338.8803393625.

The spelling of 38916979 in words is "thirty-eight million, nine hundred sixteen thousand, nine hundred seventy-nine".