389151887 has 2 divisors, whose sum is σ = 389151888. Its totient is φ = 389151886.

The previous prime is 389151859. The next prime is 389151929. The reversal of 389151887 is 788151983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389151887 - 2⁶ = 389151823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389151817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194575943 + 194575944.

It is an arithmetic number, because the mean of its divisors is an integer number (194575944).

Almost surely, 2^389151887 is an apocalyptic number.

389151887 is a deficient number, since it is larger than the sum of its proper divisors (1).

389151887 is an equidigital number, since it uses as much as digits as its factorization.

389151887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 50.

The square root of 389151887 is about 19726.9330358269. The cubic root of 389151887 is about 730.0843631781.

The spelling of 389151887 in words is "three hundred eighty-nine million, one hundred fifty-one thousand, eight hundred eighty-seven".