88440040 has 64 divisors (see below), whose sum is σ = 218408400. Its totient is φ = 32028672.

The previous prime is 88440031. The next prime is 88440059. The reversal of 88440040 is 4004488.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 33709636 + 54730404 = 5806^2 + 7398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 88439990 and 88440008.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25956 + ... + 29164.

Almost surely, 2^88440040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 88440040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109204200).

88440040 is an abundant number, since it is smaller than the sum of its proper divisors (129968360).

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

88440040 is a wasteful number, since it uses less digits than its factorization.

88440040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286 (or 3282 counting only the distinct ones).

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

The square root of 88440040 is about 9404.2564831038. The cubic root of 88440040 is about 445.5361798565.

The spelling of 88440040 in words is "eighty-eight million, four hundred forty thousand, forty".