238989951 has 24 divisors (see below), whose sum is σ = 350628096. Its totient is φ = 156839760.

The previous prime is 238989917. The next prime is 238989967. The reversal of 238989951 is 159989832.

It is not a de Polignac number, because 238989951 - 2²² = 234795647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238989851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 345516 + ... + 346206.

It is an arithmetic number, because the mean of its divisors is an integer number (14609504).

Almost surely, 2^238989951 is an apocalyptic number.

238989951 is a deficient number, since it is larger than the sum of its proper divisors (111638145).

238989951 is a wasteful number, since it uses less digits than its factorization.

238989951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1240 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 238989951 is about 15459.2998224370. The cubic root of 238989951 is about 620.5734816964.

The spelling of 238989951 in words is "two hundred thirty-eight million, nine hundred eighty-nine thousand, nine hundred fifty-one".