400238375 has 16 divisors (see below), whose sum is σ = 501396480. Its totient is φ = 318973600.

The previous prime is 400238357. The next prime is 400238383. The reversal of 400238375 is 573832004.

It is a happy number.

It is not a de Polignac number, because 400238375 - 2⁸ = 400238119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27674 + ... + 39576.

It is an arithmetic number, because the mean of its divisors is an integer number (31337280).

Almost surely, 2^400238375 is an apocalyptic number.

400238375 is a deficient number, since it is larger than the sum of its proper divisors (101158105).

400238375 is a wasteful number, since it uses less digits than its factorization.

400238375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12187 (or 12177 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 400238375 is about 20005.9584874107. The cubic root of 400238375 is about 736.9526341646.

The spelling of 400238375 in words is "four hundred million, two hundred thirty-eight thousand, three hundred seventy-five".