400423332 has 24 divisors (see below), whose sum is σ = 935877376. Its totient is φ = 133252128.

The previous prime is 400423313. The next prime is 400423357. The reversal of 400423332 is 233324004.

It is a junction number, because it is equal to n+sod(n) for n = 400423299 and 400423308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20203 + ... + 34770.

Almost surely, 2^400423332 is an apocalyptic number.

It is an amenable number.

400423332 is an abundant number, since it is smaller than the sum of its proper divisors (535454044).

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

400423332 is a wasteful number, since it uses less digits than its factorization.

400423332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55587 (or 55585 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 400423332 is about 20010.5805013248. The cubic root of 400423332 is about 737.0661361558.

Adding to 400423332 its reverse (233324004), we get a palindrome (633747336).

The spelling of 400423332 in words is "four hundred million, four hundred twenty-three thousand, three hundred thirty-two".