400613376 has 56 divisors (see below), whose sum is σ = 1068302664. Its totient is φ = 133529600.

The previous prime is 400613371. The next prime is 400613377. The reversal of 400613376 is 673316004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400613371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16426 + ... + 32726.

Almost surely, 2^400613376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400613376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (534151332).

400613376 is an abundant number, since it is smaller than the sum of its proper divisors (667689288).

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

400613376 is an equidigital number, since it uses as much as digits as its factorization.

400613376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16330 (or 16306 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 400613376 is about 20015.3285259073. The cubic root of 400613376 is about 737.1827234699.

The spelling of 400613376 in words is "four hundred million, six hundred thirteen thousand, three hundred seventy-six".