400337400736 has 48 divisors (see below), whose sum is σ = 970048324224. Its totient is φ = 158375234304.

The previous prime is 400337400733. The next prime is 400337400761. The reversal of 400337400736 is 637004733004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400337400695 and 400337400704.

It is not an unprimeable number, because it can be changed into a prime (400337400733) 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, 68736340 + ... + 68742163.

It is an arithmetic number, because the mean of its divisors is an integer number (20209340088).

Almost surely, 2^400337400736 is an apocalyptic number.

It is an amenable number.

400337400736 is an abundant number, since it is smaller than the sum of its proper divisors (569710923488).

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

400337400736 is a wasteful number, since it uses less digits than its factorization.

400337400736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137478533 (or 137478525 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 37.

The spelling of 400337400736 in words is "four hundred billion, three hundred thirty-seven million, four hundred thousand, seven hundred thirty-six".