238279491 has 12 divisors (see below), whose sum is σ = 345401368. Its totient is φ = 158289984.

The previous prime is 238279453. The next prime is 238279501. The reversal of 238279491 is 194972832.

It is not a de Polignac number, because 238279491 - 2⁶ = 238279427 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (238279411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44230 + ... + 49323.

Almost surely, 2^238279491 is an apocalyptic number.

238279491 is a deficient number, since it is larger than the sum of its proper divisors (107121877).

238279491 is a wasteful number, since it uses less digits than its factorization.

238279491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93842 (or 93839 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 238279491 is about 15436.3043180678. The cubic root of 238279491 is about 619.9579324562.

The spelling of 238279491 in words is "two hundred thirty-eight million, two hundred seventy-nine thousand, four hundred ninety-one".