400112112 has 40 divisors (see below), whose sum is σ = 1058838480. Its totient is φ = 130117120.

The previous prime is 400112093. The next prime is 400112123. The reversal of 400112112 is 211211004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 7 ways as a sum of consecutive naturals, for example, 99687 + ... + 103622.

It is an arithmetic number, because the mean of its divisors is an integer number (26470962).

Almost surely, 2^400112112 is an apocalyptic number.

It is an amenable number.

400112112 is an abundant number, since it is smaller than the sum of its proper divisors (658726368).

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

400112112 is a wasteful number, since it uses less digits than its factorization.

400112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203361 (or 203355 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 400112112 is about 20002.8026036353. The cubic root of 400112112 is about 736.8751306544.

Adding to 400112112 its reverse (211211004), we get a palindrome (611323116).

The spelling of 400112112 in words is "four hundred million, one hundred twelve thousand, one hundred twelve".