997793793 has 12 divisors (see below), whose sum is σ = 1449311760. Its totient is φ = 661478616.

The previous prime is 997793791. The next prime is 997793803. The reversal of 997793793 is 397397799.

It is not a de Polignac number, because 997793793 - 2¹ = 997793791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997793793.

It is not an unprimeable number, because it can be changed into a prime (997793791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308071 + ... + 311292.

It is an arithmetic number, because the mean of its divisors is an integer number (120775980).

Almost surely, 2^997793793 is an apocalyptic number.

It is an amenable number.

997793793 is a deficient number, since it is larger than the sum of its proper divisors (451517967).

997793793 is a wasteful number, since it uses less digits than its factorization.

997793793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619548 (or 619545 counting only the distinct ones).

The product of its digits is 20253807, while the sum is 63.

The square root of 997793793 is about 31587.8741449943. The cubic root of 997793793 is about 999.2640561862.

The spelling of 997793793 in words is "nine hundred ninety-seven million, seven hundred ninety-three thousand, seven hundred ninety-three".