409240329 has 4 divisors (see below), whose sum is σ = 545653776. Its totient is φ = 272826884.

The previous prime is 409240289. The next prime is 409240339. The reversal of 409240329 is 923042904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 409240329 - 2²⁰ = 408191753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 409240329.

It is not an unprimeable number, because it can be changed into a prime (409240339) 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, 68206719 + ... + 68206724.

It is an arithmetic number, because the mean of its divisors is an integer number (136413444).

Almost surely, 2^409240329 is an apocalyptic number.

It is an amenable number.

409240329 is a deficient number, since it is larger than the sum of its proper divisors (136413447).

409240329 is a wasteful number, since it uses less digits than its factorization.

409240329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136413446.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 409240329 is about 20229.6892956862. The cubic root of 409240329 is about 742.4367740832.

The spelling of 409240329 in words is "four hundred nine million, two hundred forty thousand, three hundred twenty-nine".