993977152 has 42 divisors (see below), whose sum is σ = 2294458962. Its totient is φ = 425988864.

The previous prime is 993977147. The next prime is 993977167. The reversal of 993977152 is 251779399.

It can be written as a sum of positive squares in only one way, i.e., 660695616 + 333281536 = 25704^2 + 18256^2 .

It is a super-2 number, since 2×993977152² = 1975981157396062208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 993977152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155343 + ... + 161614.

Almost surely, 2^993977152 is an apocalyptic number.

It is an amenable number.

993977152 is an abundant number, since it is smaller than the sum of its proper divisors (1300481810).

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

993977152 is a wasteful number, since it uses less digits than its factorization.

993977152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316983 (or 316966 counting only the distinct ones).

The product of its digits is 1071630, while the sum is 52.

The square root of 993977152 is about 31527.4031915094. The cubic root of 993977152 is about 997.9883399374.

The spelling of 993977152 in words is "nine hundred ninety-three million, nine hundred seventy-seven thousand, one hundred fifty-two".