400403322 has 24 divisors (see below), whose sum is σ = 946408320. Its totient is φ = 121334280.

The previous prime is 400403317. The next prime is 400403351. The reversal of 400403322 is 223304004.

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

It is a junction number, because it is equal to n+sod(n) for n = 400403295 and 400403304.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1010922 + ... + 1011317.

It is an arithmetic number, because the mean of its divisors is an integer number (39433680).

Almost surely, 2^400403322 is an apocalyptic number.

400403322 is an abundant number, since it is smaller than the sum of its proper divisors (546004998).

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

400403322 is a wasteful number, since it uses less digits than its factorization.

400403322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022258 (or 2022255 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 400403322 is about 20010.0805095832. The cubic root of 400403322 is about 737.0538583672.

Adding to 400403322 its reverse (223304004), we get a palindrome (623707326).

The spelling of 400403322 in words is "four hundred million, four hundred three thousand, three hundred twenty-two".