400051122 has 16 divisors (see below), whose sum is σ = 817126272. Its totient is φ = 130513040.

The previous prime is 400051117. The next prime is 400051139. The reversal of 400051122 is 221150004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709029 + ... + 709592.

It is an arithmetic number, because the mean of its divisors is an integer number (51070392).

Almost surely, 2^400051122 is an apocalyptic number.

400051122 is an abundant number, since it is smaller than the sum of its proper divisors (417075150).

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

400051122 is a wasteful number, since it uses less digits than its factorization.

400051122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418673.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 400051122 is about 20001.2780091673. The cubic root of 400051122 is about 736.8376875673.

The spelling of 400051122 in words is "four hundred million, fifty-one thousand, one hundred twenty-two".