904975470989 has 2 divisors, whose sum is σ = 904975470990. Its totient is φ = 904975470988.

The previous prime is 904975470947. The next prime is 904975471009. The reversal of 904975470989 is 989074579409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 580770498889 + 324204972100 = 762083^2 + 569390^2 .

It is a cyclic number.

It is not a de Polignac number, because 904975470989 - 2⁸ = 904975470733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (904975440989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452487735494 + 452487735495.

It is an arithmetic number, because the mean of its divisors is an integer number (452487735495).

Almost surely, 2^904975470989 is an apocalyptic number.

It is an amenable number.

904975470989 is a deficient number, since it is larger than the sum of its proper divisors (1).

904975470989 is an equidigital number, since it uses as much as digits as its factorization.

904975470989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 205752960, while the sum is 71.

The spelling of 904975470989 in words is "nine hundred four billion, nine hundred seventy-five million, four hundred seventy thousand, nine hundred eighty-nine".