400425136 has 20 divisors (see below), whose sum is σ = 776517264. Its totient is φ = 200033600.

The previous prime is 400425131. The next prime is 400425139. The reversal of 400425136 is 631524004.

It is a self number, because there is not a number n which added to its sum of digits gives 400425136.

It is not an unprimeable number, because it can be changed into a prime (400425131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8301 + ... + 29491.

Almost surely, 2^400425136 is an apocalyptic number.

It is an amenable number.

400425136 is a deficient number, since it is larger than the sum of its proper divisors (376092128).

400425136 is a wasteful number, since it uses less digits than its factorization.

400425136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22380 (or 22374 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 400425136 is about 20010.6255774276. The cubic root of 400425136 is about 737.0672430388.

The spelling of 400425136 in words is "four hundred million, four hundred twenty-five thousand, one hundred thirty-six".