409331229 has 4 divisors (see below), whose sum is σ = 545774976. Its totient is φ = 272887484.

The previous prime is 409331227. The next prime is 409331239. The reversal of 409331229 is 922133904.

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 409331229 - 2¹ = 409331227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 409331229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409331227) 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, 68221869 + ... + 68221874.

It is an arithmetic number, because the mean of its divisors is an integer number (136443744).

Almost surely, 2^409331229 is an apocalyptic number.

It is an amenable number.

409331229 is a deficient number, since it is larger than the sum of its proper divisors (136443747).

409331229 is a wasteful number, since it uses less digits than its factorization.

409331229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136443746.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 409331229 is about 20231.9358688189. The cubic root of 409331229 is about 742.4917397532.

The spelling of 409331229 in words is "four hundred nine million, three hundred thirty-one thousand, two hundred twenty-nine".