904130009 has 2 divisors, whose sum is σ = 904130010. Its totient is φ = 904130008.

The previous prime is 904129981. The next prime is 904130011. The reversal of 904130009 is 900031409.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 901680784 + 2449225 = 30028^2 + 1565^2 .

It is a cyclic number.

It is not a de Polignac number, because 904130009 - 2⁸ = 904129753 is a prime.

Together with 904130011, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 904130009.

It is not a weakly prime, because it can be changed into another prime (904135009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452065004 + 452065005.

It is an arithmetic number, because the mean of its divisors is an integer number (452065005).

Almost surely, 2^904130009 is an apocalyptic number.

It is an amenable number.

904130009 is a deficient number, since it is larger than the sum of its proper divisors (1).

904130009 is an equidigital number, since it uses as much as digits as its factorization.

904130009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 904130009 is about 30068.7546965284. The cubic root of 904130009 is about 966.9639757054.

The spelling of 904130009 in words is "nine hundred four million, one hundred thirty thousand, nine".