997449 has 8 divisors (see below), whose sum is σ = 1334592. Its totient is φ = 662640.

The previous prime is 997439. The next prime is 997453. The reversal of 997449 is 944799.

997449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 997449 - 2⁴ = 997433 is a prime.

997449 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 997449.

It is not an unprimeable number, because it can be changed into a prime (997439) 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, 1179 + ... + 1839.

It is an arithmetic number, because the mean of its divisors is an integer number (166824).

2⁹⁹⁷⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

997449 is a deficient number, since it is larger than the sum of its proper divisors (337143).

997449 is a wasteful number, since it uses less digits than its factorization.

997449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167.

The product of its digits is 81648, while the sum is 42.

The square root of 997449 is about 998.7236855107. The cubic root of 997449 is about 99.9148942573.

Subtracting from 997449 its reverse (944799), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 997449 in words is "nine hundred ninety-seven thousand, four hundred forty-nine".