409799 has 8 divisors (see below), whose sum is σ = 456960. Its totient is φ = 364896.

The previous prime is 409781. The next prime is 409813. The reversal of 409799 is 997904.

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

It is a cyclic number.

It is not a de Polignac number, because 409799 - 2⁸ = 409543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409709) 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, 167 + ... + 920.

It is an arithmetic number, because the mean of its divisors is an integer number (57120).

2⁴⁰⁹⁷⁹⁹ is an apocalyptic number.

409799 is a deficient number, since it is larger than the sum of its proper divisors (47161).

409799 is a wasteful number, since it uses less digits than its factorization.

409799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 409799 is about 640.1554498714. The cubic root of 409799 is about 74.2774464242.

The spelling of 409799 in words is "four hundred nine thousand, seven hundred ninety-nine".