904166609 has 2 divisors, whose sum is σ = 904166610. Its totient is φ = 904166608.

The previous prime is 904166597. The next prime is 904166621. The reversal of 904166609 is 906661409.

It is a balanced prime because it is at equal distance from previous prime (904166597) and next prime (904166621).

It can be written as a sum of positive squares in only one way, i.e., 848440384 + 55726225 = 29128^2 + 7465^2 .

It is a cyclic number.

It is not a de Polignac number, because 904166609 - 2²⁰ = 903118033 is a prime.

It is not a weakly prime, because it can be changed into another prime (904366609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452083304 + 452083305.

It is an arithmetic number, because the mean of its divisors is an integer number (452083305).

Almost surely, 2^904166609 is an apocalyptic number.

It is an amenable number.

904166609 is a deficient number, since it is larger than the sum of its proper divisors (1).

904166609 is an equidigital number, since it uses as much as digits as its factorization.

904166609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 904166609 is about 30069.3632955538. The cubic root of 904166609 is about 966.9770233880.

The spelling of 904166609 in words is "nine hundred four million, one hundred sixty-six thousand, six hundred nine".