400412453320 has 64 divisors (see below), whose sum is σ = 988321435200. Its totient is φ = 144791066880.

The previous prime is 400412453279. The next prime is 400412453339. The reversal of 400412453320 is 23354214004.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 2463219 + ... + 2620738.

It is an arithmetic number, because the mean of its divisors is an integer number (15442522425).

Almost surely, 2^400412453320 is an apocalyptic number.

400412453320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400412453320 is an abundant number, since it is smaller than the sum of its proper divisors (587908981880).

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

400412453320 is a wasteful number, since it uses less digits than its factorization.

400412453320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084158 (or 5084154 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 400412453320 its reverse (23354214004), we get a palindrome (423766667324).

The spelling of 400412453320 in words is "four hundred billion, four hundred twelve million, four hundred fifty-three thousand, three hundred twenty".