377989939 has 2 divisors, whose sum is σ = 377989940. Its totient is φ = 377989938.

The previous prime is 377989907. The next prime is 377989961. The reversal of 377989939 is 939989773.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 377989939 - 2⁵ = 377989907 is a prime.

It is not a weakly prime, because it can be changed into another prime (377989979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188994969 + 188994970.

It is an arithmetic number, because the mean of its divisors is an integer number (188994970).

Almost surely, 2^377989939 is an apocalyptic number.

377989939 is a deficient number, since it is larger than the sum of its proper divisors (1).

377989939 is an equidigital number, since it uses as much as digits as its factorization.

377989939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23147208, while the sum is 64.

The square root of 377989939 is about 19441.9633525012. The cubic root of 377989939 is about 723.0362642641.

The spelling of 377989939 in words is "three hundred seventy-seven million, nine hundred eighty-nine thousand, nine hundred thirty-nine".