400050312 has 64 divisors (see below), whose sum is σ = 1017964800. Its totient is φ = 130990080.

The previous prime is 400050269. The next prime is 400050317. The reversal of 400050312 is 213050004.

It is a junction number, because it is equal to n+sod(n) for n = 400050291 and 400050300.

It is not an unprimeable number, because it can be changed into a prime (400050317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486862 + ... + 487682.

It is an arithmetic number, because the mean of its divisors is an integer number (15905700).

Almost surely, 2^400050312 is an apocalyptic number.

It is an amenable number.

400050312 is an abundant number, since it is smaller than the sum of its proper divisors (617914488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400050312 is a wasteful number, since it uses less digits than its factorization.

400050312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 400050312 is about 20001.2577604510. The cubic root of 400050312 is about 736.8371902651.

The spelling of 400050312 in words is "four hundred million, fifty thousand, three hundred twelve".