904424409 has 18 divisors (see below), whose sum is σ = 1519679850. Its totient is φ = 516813696.

The previous prime is 904424351. The next prime is 904424413.

It is a happy number.

904424409 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 904325184 + 99225 = 30072^2 + 315^2 .

It is not a de Polignac number, because 904424409 - 2¹³ = 904416217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (904424459) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1024984 + ... + 1025865.

Almost surely, 2^904424409 is an apocalyptic number.

It is an amenable number.

904424409 is a deficient number, since it is larger than the sum of its proper divisors (615255441).

904424409 is a wasteful number, since it uses less digits than its factorization.

904424409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050869 (or 2050859 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 904424409 is about 30073.6497452504. The cubic root of 904424409 is about 967.0689175829.

The spelling of 904424409 in words is "nine hundred four million, four hundred twenty-four thousand, four hundred nine".