400362394 has 4 divisors (see below), whose sum is σ = 600543594. Its totient is φ = 200181196.

The previous prime is 400362383. The next prime is 400362409. The reversal of 400362394 is 493263004.

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

It can be written as a sum of positive squares in only one way, i.e., 267813225 + 132549169 = 16365^2 + 11513^2 .

It is a super-2 number, since 2×400362394² = 320580093058822472, which contains 22 as substring.

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 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, 100090597 + ... + 100090600.

Almost surely, 2^400362394 is an apocalyptic number.

400362394 is a deficient number, since it is larger than the sum of its proper divisors (200181200).

400362394 is a wasteful number, since it uses less digits than its factorization.

400362394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200181199.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 400362394 is about 20009.0577989070. The cubic root of 400362394 is about 737.0287443829.

The spelling of 400362394 in words is "four hundred million, three hundred sixty-two thousand, three hundred ninety-four".