904980847 has 2 divisors, whose sum is σ = 904980848. Its totient is φ = 904980846.

The previous prime is 904980821. The next prime is 904980863. The reversal of 904980847 is 748089409.

It is a strong prime.

It is an emirp because it is prime and its reverse (748089409) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 904980847 - 2⁷ = 904980719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 904980847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (904980047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452490423 + 452490424.

It is an arithmetic number, because the mean of its divisors is an integer number (452490424).

Almost surely, 2^904980847 is an apocalyptic number.

904980847 is a deficient number, since it is larger than the sum of its proper divisors (1).

904980847 is an equidigital number, since it uses as much as digits as its factorization.

904980847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 904980847 is about 30082.8995776670. The cubic root of 904980847 is about 967.2672033915.

The spelling of 904980847 in words is "nine hundred four million, nine hundred eighty thousand, eight hundred forty-seven".