924409 has 4 divisors (see below), whose sum is σ = 978804. Its totient is φ = 870016.

The previous prime is 924403. The next prime is 924419. The reversal of 924409 is 904429.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 904429 = 23 ⋅39323.

It can be written as a sum of positive squares in 2 ways, for example, as 760384 + 164025 = 872^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 924409 - 2³ = 924401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (924401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27172 + ... + 27205.

It is an arithmetic number, because the mean of its divisors is an integer number (244701).

2⁹²⁴⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

924409 is a deficient number, since it is larger than the sum of its proper divisors (54395).

924409 is a wasteful number, since it uses less digits than its factorization.

924409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54394.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 924409 is about 961.4619077218. The cubic root of 924409 is about 97.4140026277.

The spelling of 924409 in words is "nine hundred twenty-four thousand, four hundred nine".