389055899 has 2 divisors, whose sum is σ = 389055900. Its totient is φ = 389055898.

The previous prime is 389055889. The next prime is 389055907. The reversal of 389055899 is 998550983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 389055899 - 2⁴ = 389055883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (389055869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194527949 + 194527950.

It is an arithmetic number, because the mean of its divisors is an integer number (194527950).

Almost surely, 2^389055899 is an apocalyptic number.

389055899 is a deficient number, since it is larger than the sum of its proper divisors (1).

389055899 is an equidigital number, since it uses as much as digits as its factorization.

389055899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 56.

The square root of 389055899 is about 19724.4999683135. The cubic root of 389055899 is about 730.0243308335.

The spelling of 389055899 in words is "three hundred eighty-nine million, fifty-five thousand, eight hundred ninety-nine".