400444044022 has 8 divisors (see below), whose sum is σ = 655272072072. Its totient is φ = 182020020000.

The previous prime is 400444043957. The next prime is 400444044073. The reversal of 400444044022 is 220440444004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9101000979 + ... + 9101001022.

It is an arithmetic number, because the mean of its divisors is an integer number (81909009009).

Almost surely, 2^400444044022 is an apocalyptic number.

400444044022 is a deficient number, since it is larger than the sum of its proper divisors (254828028050).

400444044022 is a wasteful number, since it uses less digits than its factorization.

400444044022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18202002014.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 400444044022 its reverse (220440444004), we get a palindrome (620884488026).

The spelling of 400444044022 in words is "four hundred billion, four hundred forty-four million, forty-four thousand, twenty-two".