997747092 has 24 divisors (see below), whose sum is σ = 2586752000. Its totient is φ = 332582328.

The previous prime is 997747063. The next prime is 997747109. The reversal of 997747092 is 290747799.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4619092 + ... + 4619307.

Almost surely, 2^997747092 is an apocalyptic number.

It is an amenable number.

997747092 is an abundant number, since it is smaller than the sum of its proper divisors (1589004908).

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

997747092 is a wasteful number, since it uses less digits than its factorization.

997747092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9238412 (or 9238404 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 54.

The square root of 997747092 is about 31587.1349128090. The cubic root of 997747092 is about 999.2484660048.

The spelling of 997747092 in words is "nine hundred ninety-seven million, seven hundred forty-seven thousand, ninety-two".