400614540 has 96 divisors (see below), whose sum is σ = 1159564224. Its totient is φ = 103265280.

The previous prime is 400614509. The next prime is 400614551. The reversal of 400614540 is 45416004.

It is a self number, because there is not a number n which added to its sum of digits gives 400614540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401322 + ... + 402318.

It is an arithmetic number, because the mean of its divisors is an integer number (12078794).

Almost surely, 2^400614540 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 400614540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579782112).

400614540 is an abundant number, since it is smaller than the sum of its proper divisors (758949684).

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

400614540 is a wasteful number, since it uses less digits than its factorization.

400614540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1225 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 400614540 is about 20015.3576036003. The cubic root of 400614540 is about 737.1834374417.

The spelling of 400614540 in words is "four hundred million, six hundred fourteen thousand, five hundred forty".