400402442022 has 32 divisors (see below), whose sum is σ = 919584558720. Its totient is φ = 114948069120.

The previous prime is 400402442009. The next prime is 400402442081. The reversal of 400402442022 is 220244204004.

It is a junction number, because it is equal to n+sod(n) for n = 400402441983 and 400402442001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159648843 + ... + 159651350.

It is an arithmetic number, because the mean of its divisors is an integer number (28737017460).

Almost surely, 2^400402442022 is an apocalyptic number.

400402442022 is an abundant number, since it is smaller than the sum of its proper divisors (519182116698).

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

400402442022 is a wasteful number, since it uses less digits than its factorization.

400402442022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319300228.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 400402442022 its reverse (220244204004), we get a palindrome (620646646026).

The spelling of 400402442022 in words is "four hundred billion, four hundred two million, four hundred forty-two thousand, twenty-two".