400400007404 has 24 divisors (see below), whose sum is σ = 752367214368. Its totient is φ = 185769678080.

The previous prime is 400400007383. The next prime is 400400007487. The reversal of 400400007404 is 404700004004.

It is a self number, because there is not a number n which added to its sum of digits gives 400400007404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41461619 + ... + 41471274.

It is an arithmetic number, because the mean of its divisors is an integer number (31348633932).

Almost surely, 2^400400007404 is an apocalyptic number.

It is an amenable number.

400400007404 is a deficient number, since it is larger than the sum of its proper divisors (351967206964).

400400007404 is a wasteful number, since it uses less digits than its factorization.

400400007404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82932985 (or 82932983 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The spelling of 400400007404 in words is "four hundred billion, four hundred million, seven thousand, four hundred four".