40000400004 has 48 divisors (see below), whose sum is σ = 98949003776. Its totient is φ = 12554611200.

The previous prime is 40000399991. The next prime is 40000400039.

40000400004 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (12).

40000400004 is a modest number, since divided by 400004 gives 4 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1439317 + ... + 1466844.

Almost surely, 2^40000400004 is an apocalyptic number.

It is an amenable number.

40000400004 is an abundant number, since it is smaller than the sum of its proper divisors (58948603772).

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

40000400004 is a wasteful number, since it uses less digits than its factorization.

40000400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906236 (or 2906234 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The spelling of 40000400004 in words is "forty billion, four hundred thousand, four".