400251064 has 16 divisors (see below), whose sum is σ = 755077320. Its totient is φ = 198897120.

The previous prime is 400251031. The next prime is 400251079. The reversal of 400251064 is 460152004.

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 in 3 ways as a sum of consecutive naturals, for example, 152167 + ... + 154774.

Almost surely, 2^400251064 is an apocalyptic number.

It is an amenable number.

400251064 is a deficient number, since it is larger than the sum of its proper divisors (354826256).

400251064 is a wasteful number, since it uses less digits than its factorization.

400251064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307110 (or 307106 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 400251064 is about 20006.2756154163. The cubic root of 400251064 is about 736.9604221011.

The spelling of 400251064 in words is "four hundred million, two hundred fifty-one thousand, sixty-four".