400332422 has 16 divisors (see below), whose sum is σ = 726654240. Its totient is φ = 161478528.

The previous prime is 400332379. The next prime is 400332467. The reversal of 400332422 is 224233004.

It is a junction number, because it is equal to n+sod(n) for n = 400332394 and 400332403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840797 + ... + 841272.

It is an arithmetic number, because the mean of its divisors is an integer number (45415890).

Almost surely, 2^400332422 is an apocalyptic number.

400332422 is a deficient number, since it is larger than the sum of its proper divisors (326321818).

400332422 is a wasteful number, since it uses less digits than its factorization.

400332422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682095.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 400332422 is about 20008.3088240861. The cubic root of 400332422 is about 737.0103520654.

Adding to 400332422 its reverse (224233004), we get a palindrome (624565426).

The spelling of 400332422 in words is "four hundred million, three hundred thirty-two thousand, four hundred twenty-two".