400404152 has 16 divisors (see below), whose sum is σ = 750970440. Its totient is φ = 200145376.

The previous prime is 400404113. The next prime is 400404161. The reversal of 400404152 is 251404004.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 49463 + ... + 56985.

Almost surely, 2^400404152 is an apocalyptic number.

It is an amenable number.

400404152 is a deficient number, since it is larger than the sum of its proper divisors (350566288).

400404152 is a wasteful number, since it uses less digits than its factorization.

400404152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14182 (or 14178 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 400404152 is about 20010.1012491192. The cubic root of 400404152 is about 737.0543676489.

Adding to 400404152 its reverse (251404004), we get a palindrome (651808156).

The spelling of 400404152 in words is "four hundred million, four hundred four thousand, one hundred fifty-two".