797409 has 12 divisors (see below), whose sum is σ = 1180452. Its totient is φ = 518400.

The previous prime is 797399. The next prime is 797417. The reversal of 797409 is 904797.

It can be written as a sum of positive squares in 2 ways, for example, as 230400 + 567009 = 480^2 + 753^2 .

It is not a de Polignac number, because 797409 - 2⁷ = 797281 is a prime.

It is a super-2 number, since 2×797409² = 1271722226562, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (797429) 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, 712 + ... + 1449.

It is an arithmetic number, because the mean of its divisors is an integer number (98371).

2⁷⁹⁷⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

797409 is a deficient number, since it is larger than the sum of its proper divisors (383043).

797409 is a wasteful number, since it uses less digits than its factorization.

797409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208 (or 2205 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 797409 is about 892.9776033026. The cubic root of 797409 is about 92.7314486428.

The spelling of 797409 in words is "seven hundred ninety-seven thousand, four hundred nine".