400084448 has 24 divisors (see below), whose sum is σ = 821914128. Its totient is φ = 191344384.

The previous prime is 400084429. The next prime is 400084469. The reversal of 400084448 is 844480004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271061 + ... + 272532.

It is an arithmetic number, because the mean of its divisors is an integer number (34246422).

Almost surely, 2^400084448 is an apocalyptic number.

It is an amenable number.

400084448 is an abundant number, since it is smaller than the sum of its proper divisors (421829680).

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

400084448 is a wasteful number, since it uses less digits than its factorization.

400084448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543626 (or 543618 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 400084448 is about 20002.1110885826. Note that the first 3 decimals coincide. The cubic root of 400084448 is about 736.8581475949.

The spelling of 400084448 in words is "four hundred million, eighty-four thousand, four hundred forty-eight".