400111104 has 40 divisors (see below), whose sum is σ = 1065925080. Its totient is φ = 133369856.

The previous prime is 400111093. The next prime is 400111109. The reversal of 400111104 is 401111004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 400111104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400111109) 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, 128709 + ... + 131780.

It is an arithmetic number, because the mean of its divisors is an integer number (26648127).

Almost surely, 2^400111104 is an apocalyptic number.

It is an amenable number.

400111104 is an abundant number, since it is smaller than the sum of its proper divisors (665813976).

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

400111104 is an equidigital number, since it uses as much as digits as its factorization.

400111104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260510 (or 260494 counting only the distinct ones).

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

The square root of 400111104 is about 20002.7774071502. Note that the first 3 decimals coincide. The cubic root of 400111104 is about 736.8745118522.

Adding to 400111104 its reverse (401111004), we get a palindrome (801222108).

The spelling of 400111104 in words is "four hundred million, one hundred eleven thousand, one hundred four".