238485639 has 32 divisors (see below), whose sum is σ = 386850816. Its totient is φ = 127572480.

The previous prime is 238485619. The next prime is 238485703. The reversal of 238485639 is 936584832.

It is not a de Polignac number, because 238485639 - 2⁵ = 238485607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238485619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68634 + ... + 72024.

It is an arithmetic number, because the mean of its divisors is an integer number (12089088).

Almost surely, 2^238485639 is an apocalyptic number.

238485639 is a deficient number, since it is larger than the sum of its proper divisors (148365177).

238485639 is a wasteful number, since it uses less digits than its factorization.

238485639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615.

The product of its digits is 1244160, while the sum is 48.

The square root of 238485639 is about 15442.9802499388. The cubic root of 238485639 is about 620.1366668892.

The spelling of 238485639 in words is "two hundred thirty-eight million, four hundred eighty-five thousand, six hundred thirty-nine".