8800400440 has 32 divisors (see below), whose sum is σ = 21324048480. Its totient is φ = 3249378432.

The previous prime is 8800400437. The next prime is 8800400459. The reversal of 8800400440 is 440040088.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8800400399 and 8800400408.

It is a congruent number.

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, 8461404 + ... + 8462443.

It is an arithmetic number, because the mean of its divisors is an integer number (666376515).

Almost surely, 2^8800400440 is an apocalyptic number.

It is an amenable number.

8800400440 is an abundant number, since it is smaller than the sum of its proper divisors (12523648040).

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

8800400440 is a wasteful number, since it uses less digits than its factorization.

8800400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16923871 (or 16923867 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 8800400440 is about 93810.4495245599. The cubic root of 8800400440 is about 2064.5915460627.

The spelling of 8800400440 in words is "eight billion, eight hundred million, four hundred thousand, four hundred forty".