400404040084 has 24 divisors (see below), whose sum is σ = 732389289408. Its totient is φ = 191178926400.

The previous prime is 400404040079. The next prime is 400404040087. The reversal of 400404040084 is 480040404004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400404040087) 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, 3565522 + ... + 3676105.

It is an arithmetic number, because the mean of its divisors is an integer number (30516220392).

Almost surely, 2^400404040084 is an apocalyptic number.

It is an amenable number.

400404040084 is a deficient number, since it is larger than the sum of its proper divisors (331985249324).

400404040084 is a wasteful number, since it uses less digits than its factorization.

400404040084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7242255 (or 7242253 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 400404040084 its reverse (480040404004), we get a palindrome (880444444088).

The spelling of 400404040084 in words is "four hundred billion, four hundred four million, forty thousand, eighty-four".