400411044 has 36 divisors (see below), whose sum is σ = 1104164880. Its totient is φ = 121336560.

The previous prime is 400410943. The next prime is 400411049. The reversal of 400411044 is 440114004.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (400411049) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 505174 + ... + 505965.

Almost surely, 2^400411044 is an apocalyptic number.

400411044 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400411044 is an abundant number, since it is smaller than the sum of its proper divisors (703753836).

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

400411044 is a wasteful number, since it uses less digits than its factorization.

400411044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011160 (or 1011155 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 400411044 is about 20010.2734613998. The cubic root of 400411044 is about 737.0585965008.

Adding to 400411044 its reverse (440114004), we get a palindrome (840525048).

The spelling of 400411044 in words is "four hundred million, four hundred eleven thousand, forty-four".