904969409 has 4 divisors (see below), whose sum is σ = 905204016. Its totient is φ = 904734804.

The previous prime is 904969379. The next prime is 904969441.

It is a happy number.

904969409 is nontrivially palindromic in base 10.

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 904969409 - 2²⁰ = 903920833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (904969459) 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, 111419 + ... + 119264.

It is an arithmetic number, because the mean of its divisors is an integer number (226301004).

Almost surely, 2^904969409 is an apocalyptic number.

It is an amenable number.

904969409 is a deficient number, since it is larger than the sum of its proper divisors (234607).

904969409 is a wasteful number, since it uses less digits than its factorization.

904969409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234606.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 904969409 is about 30082.7094690621. The cubic root of 904969409 is about 967.2631282964.

The spelling of 904969409 in words is "nine hundred four million, nine hundred sixty-nine thousand, four hundred nine".