8440816 has 20 divisors (see below), whose sum is σ = 17065872. Its totient is φ = 4036736.

The previous prime is 8440813. The next prime is 8440819. The reversal of 8440816 is 6180448.

It is an interprime number because it is at equal distance from previous prime (8440813) and next prime (8440819).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8440811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11101 + ... + 11836.

Almost surely, 2^8440816 is an apocalyptic number.

It is an amenable number.

8440816 is an abundant number, since it is smaller than the sum of its proper divisors (8625056).

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

8440816 is a wasteful number, since it uses less digits than its factorization.

8440816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22968 (or 22962 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 8440816 is about 2905.3082452642. The cubic root of 8440816 is about 203.6079874073.

The spelling of 8440816 in words is "eight million, four hundred forty thousand, eight hundred sixteen".