400040037404 has 36 divisors (see below), whose sum is σ = 825837208560. Its totient is φ = 169030995840.

The previous prime is 400040037367. The next prime is 400040037433. The reversal of 400040037404 is 404730040004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14359469 + ... + 14387300.

It is an arithmetic number, because the mean of its divisors is an integer number (22939922460).

Almost surely, 2^400040037404 is an apocalyptic number.

It is an amenable number.

400040037404 is an abundant number, since it is smaller than the sum of its proper divisors (425797171156).

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

400040037404 is a wasteful number, since it uses less digits than its factorization.

400040037404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28746858 (or 28746849 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

Adding to 400040037404 its reverse (404730040004), we get a palindrome (804770077408).

The spelling of 400040037404 in words is "four hundred billion, forty million, thirty-seven thousand, four hundred four".