400000764044 has 12 divisors (see below), whose sum is σ = 800001528144. Its totient is φ = 171428898864.

The previous prime is 400000764017. The next prime is 400000764089. The reversal of 400000764044 is 440467000004.

400000764044 is an admirable number.

It is a super-2 number, since 2×400000764044² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400000763998 and 400000764016.

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, 7142870759 + ... + 7142870814.

It is an arithmetic number, because the mean of its divisors is an integer number (66666794012).

Almost surely, 2^400000764044 is an apocalyptic number.

It is an amenable number.

400000764044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

400000764044 is a wasteful number, since it uses less digits than its factorization.

400000764044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14285741584 (or 14285741582 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

Adding to 400000764044 its reverse (440467000004), we get a palindrome (840467764048).

The spelling of 400000764044 in words is "four hundred billion, seven hundred sixty-four thousand, forty-four".