400808484 has 36 divisors (see below), whose sum is σ = 1015794780. Its totient is φ = 133254720.

The previous prime is 400808483. The next prime is 400808489. The reversal of 400808484 is 484808004.

It can be written as a sum of positive squares in 2 ways, for example, as 34928100 + 365880384 = 5910^2 + 19128^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (400808483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307 + ... + 28314.

Almost surely, 2^400808484 is an apocalyptic number.

It is an amenable number.

400808484 is an abundant number, since it is smaller than the sum of its proper divisors (614986296).

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

400808484 is a wasteful number, since it uses less digits than its factorization.

400808484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29020 (or 29015 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 400808484 is about 20020.2018970839. The cubic root of 400808484 is about 737.3023790716.

The spelling of 400808484 in words is "four hundred million, eight hundred eight thousand, four hundred eighty-four".