389952977 has 2 divisors, whose sum is σ = 389952978. Its totient is φ = 389952976.

The previous prime is 389952967. The next prime is 389953033. The reversal of 389952977 is 779259983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373880896 + 16072081 = 19336^2 + 4009^2 .

It is a cyclic number.

It is not a de Polignac number, because 389952977 - 2⁴ = 389952961 is a prime.

It is not a weakly prime, because it can be changed into another prime (389952907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194976488 + 194976489.

It is an arithmetic number, because the mean of its divisors is an integer number (194976489).

Almost surely, 2^389952977 is an apocalyptic number.

It is an amenable number.

389952977 is a deficient number, since it is larger than the sum of its proper divisors (1).

389952977 is an equidigital number, since it uses as much as digits as its factorization.

389952977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 59.

The square root of 389952977 is about 19747.2270711612. The cubic root of 389952977 is about 730.5849923979.

The spelling of 389952977 in words is "three hundred eighty-nine million, nine hundred fifty-two thousand, nine hundred seventy-seven".