997299 has 16 divisors (see below), whose sum is σ = 1513600. Its totient is φ = 648648.

The previous prime is 997279. The next prime is 997307. The reversal of 997299 is 992799.

It is not a de Polignac number, because 997299 - 2⁵ = 997267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732 + ... + 1590.

It is an arithmetic number, because the mean of its divisors is an integer number (94600).

2⁹⁹⁷²⁹⁹ is an apocalyptic number.

997299 is a deficient number, since it is larger than the sum of its proper divisors (516301).

997299 is a wasteful number, since it uses less digits than its factorization.

997299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 905 counting only the distinct ones).

The product of its digits is 91854, while the sum is 45.

The square root of 997299 is about 998.6485868412. The cubic root of 997299 is about 99.9098854848.

It can be divided in two parts, 997 and 299, that added together give a 4-th power (1296 = 6⁴).

The spelling of 997299 in words is "nine hundred ninety-seven thousand, two hundred ninety-nine".