389699399 has 2 divisors, whose sum is σ = 389699400. Its totient is φ = 389699398.

The previous prime is 389699393. The next prime is 389699417. The reversal of 389699399 is 993996983.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389699399 is a prime.

It is a super-2 number, since 2×389699399² = 303731243161922402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389699393) 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, 194849699 + 194849700.

It is an arithmetic number, because the mean of its divisors is an integer number (194849700).

Almost surely, 2^389699399 is an apocalyptic number.

389699399 is a deficient number, since it is larger than the sum of its proper divisors (1).

389699399 is an equidigital number, since it uses as much as digits as its factorization.

389699399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25509168, while the sum is 65.

The square root of 389699399 is about 19740.8054293638. The cubic root of 389699399 is about 730.4265968446.

The spelling of 389699399 in words is "three hundred eighty-nine million, six hundred ninety-nine thousand, three hundred ninety-nine".