993064840 has 16 divisors (see below), whose sum is σ = 2234395980. Its totient is φ = 397225920.

The previous prime is 993064817. The next prime is 993064861. The reversal of 993064840 is 48460399.

It can be written as a sum of positive squares in 2 ways, for example, as 857435524 + 135629316 = 29282^2 + 11646^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12413271 + ... + 12413350.

Almost surely, 2^993064840 is an apocalyptic number.

It is an amenable number.

993064840 is an abundant number, since it is smaller than the sum of its proper divisors (1241331140).

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

993064840 is a wasteful number, since it uses less digits than its factorization.

993064840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24826632 (or 24826628 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 993064840 is about 31512.9313139860. The cubic root of 993064840 is about 997.6829152650.

The spelling of 993064840 in words is "nine hundred ninety-three million, sixty-four thousand, eight hundred forty".