238906863 has 48 divisors (see below), whose sum is σ = 386713600. Its totient is φ = 141134400.

The previous prime is 238906861. The next prime is 238906867. The reversal of 238906863 is 368609832.

It is not a de Polignac number, because 238906863 - 2¹ = 238906861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238906861) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 721608 + ... + 721938.

Almost surely, 2^238906863 is an apocalyptic number.

238906863 is a deficient number, since it is larger than the sum of its proper divisors (147806737).

238906863 is a wasteful number, since it uses less digits than its factorization.

238906863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 238906863 is about 15456.6122743634. The cubic root of 238906863 is about 620.5015565160.

The spelling of 238906863 in words is "two hundred thirty-eight million, nine hundred six thousand, eight hundred sixty-three".