974999939 has 2 divisors, whose sum is σ = 974999940. Its totient is φ = 974999938.

The previous prime is 974999911. The next prime is 974999959. The reversal of 974999939 is 939999479.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 974999939 - 2²⁸ = 706564483 is a prime.

It is not a weakly prime, because it can be changed into another prime (974999959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487499969 + 487499970.

It is an arithmetic number, because the mean of its divisors is an integer number (487499970).

Almost surely, 2^974999939 is an apocalyptic number.

974999939 is a deficient number, since it is larger than the sum of its proper divisors (1).

974999939 is an equidigital number, since it uses as much as digits as its factorization.

974999939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44641044, while the sum is 68.

The square root of 974999939 is about 31224.9890152102. The cubic root of 974999939 is about 991.5962206609.

The spelling of 974999939 in words is "nine hundred seventy-four million, nine hundred ninety-nine thousand, nine hundred thirty-nine".