38974979 has 2 divisors, whose sum is σ = 38974980. Its totient is φ = 38974978.

The previous prime is 38974963. The next prime is 38975003. The reversal of 38974979 is 97947983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38974979 - 2⁴ = 38974963 is a prime.

It is not a weakly prime, because it can be changed into another prime (38974879) 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 as a sum of consecutive naturals, namely, 19487489 + 19487490.

It is an arithmetic number, because the mean of its divisors is an integer number (19487490).

Almost surely, 2^38974979 is an apocalyptic number.

38974979 is a deficient number, since it is larger than the sum of its proper divisors (1).

38974979 is an equidigital number, since it uses as much as digits as its factorization.

38974979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The square root of 38974979 is about 6242.9943937185. The cubic root of 38974979 is about 339.0486061357.

The spelling of 38974979 in words is "thirty-eight million, nine hundred seventy-four thousand, nine hundred seventy-nine".