40400440800 has 72 divisors (see below), whose sum is σ = 131503442616. Its totient is φ = 10773450240.

The previous prime is 40400440771. The next prime is 40400440813. The reversal of 40400440800 is 804400404.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 8414359 + ... + 8419158.

It is an arithmetic number, because the mean of its divisors is an integer number (1826436703).

Almost surely, 2^40400440800 is an apocalyptic number.

40400440800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40400440800 is an abundant number, since it is smaller than the sum of its proper divisors (91103001816).

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

40400440800 is a wasteful number, since it uses less digits than its factorization.

40400440800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16833540 (or 16833527 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The spelling of 40400440800 in words is "forty billion, four hundred million, four hundred forty thousand, eight hundred".