400074084 has 18 divisors (see below), whose sum is σ = 1011298470. Its totient is φ = 133358016.

The previous prime is 400074083. The next prime is 400074149. The reversal of 400074084 is 480470004.

It can be written as a sum of positive squares in only one way, i.e., 373262400 + 26811684 = 19320^2 + 5178^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (400074083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5556549 + ... + 5556620.

Almost surely, 2^400074084 is an apocalyptic number.

It is an amenable number.

400074084 is an abundant number, since it is smaller than the sum of its proper divisors (611224386).

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

400074084 is a wasteful number, since it uses less digits than its factorization.

400074084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11113179 (or 11113174 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 400074084 is about 20001.8520142511. The cubic root of 400074084 is about 736.8517848850.

The spelling of 400074084 in words is "four hundred million, seventy-four thousand, eighty-four".