997934969 has 8 divisors (see below), whose sum is σ = 1061025768. Its totient is φ = 935331840.

The previous prime is 997934941. The next prime is 997934983. The reversal of 997934969 is 969439799.

It can be written as a sum of positive squares in 4 ways, for example, as 270931600 + 727003369 = 16460^2 + 26963^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 997934969 - 2²⁸ = 729499513 is a prime.

It is a super-2 number, since 2×997934969² = 1991748404706061922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997934939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117692 + ... + 125885.

It is an arithmetic number, because the mean of its divisors is an integer number (132628221).

Almost surely, 2^997934969 is an apocalyptic number.

It is an amenable number.

997934969 is a deficient number, since it is larger than the sum of its proper divisors (63090799).

997934969 is a wasteful number, since it uses less digits than its factorization.

997934969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243835.

The product of its digits is 29760696, while the sum is 65.

The square root of 997934969 is about 31590.1087209272. The cubic root of 997934969 is about 999.3111819720.

The spelling of 997934969 in words is "nine hundred ninety-seven million, nine hundred thirty-four thousand, nine hundred sixty-nine".