400654460 has 24 divisors (see below), whose sum is σ = 861897456. Its totient is φ = 156352640.

The previous prime is 400654433. The next prime is 400654469. The reversal of 400654460 is 64456004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400654469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243482 + ... + 245121.

It is an arithmetic number, because the mean of its divisors is an integer number (35912394).

Almost surely, 2^400654460 is an apocalyptic number.

It is an amenable number.

400654460 is an abundant number, since it is smaller than the sum of its proper divisors (461242996).

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

400654460 is a wasteful number, since it uses less digits than its factorization.

400654460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488653 (or 488651 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 400654460 is about 20016.3548130023. The cubic root of 400654460 is about 737.2079226450.

The spelling of 400654460 in words is "four hundred million, six hundred fifty-four thousand, four hundred sixty".