389108431 has 2 divisors, whose sum is σ = 389108432. Its totient is φ = 389108430.

The previous prime is 389108413. The next prime is 389108437. The reversal of 389108431 is 134801983.

Together with previous prime (389108413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (134801983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389108431 - 2¹¹ = 389106383 is a prime.

It is a super-2 number, since 2×389108431² = 302810742150563522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389108437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194554215 + 194554216.

It is an arithmetic number, because the mean of its divisors is an integer number (194554216).

Almost surely, 2^389108431 is an apocalyptic number.

389108431 is a deficient number, since it is larger than the sum of its proper divisors (1).

389108431 is an equidigital number, since it uses as much as digits as its factorization.

389108431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 389108431 is about 19725.8315667553. The cubic root of 389108431 is about 730.0571863626.

The spelling of 389108431 in words is "three hundred eighty-nine million, one hundred eight thousand, four hundred thirty-one".