400238374 has 4 divisors (see below), whose sum is σ = 600357564. Its totient is φ = 200119186.

The previous prime is 400238357. The next prime is 400238383. The reversal of 400238374 is 473832004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100059592 + ... + 100059595.

It is an arithmetic number, because the mean of its divisors is an integer number (150089391).

Almost surely, 2^400238374 is an apocalyptic number.

400238374 is a deficient number, since it is larger than the sum of its proper divisors (200119190).

400238374 is a wasteful number, since it uses less digits than its factorization.

400238374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200119189.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 400238374 is about 20005.9584624181. The cubic root of 400238374 is about 736.9526335509.

The spelling of 400238374 in words is "four hundred million, two hundred thirty-eight thousand, three hundred seventy-four".