908489 has 2 divisors, whose sum is σ = 908490. Its totient is φ = 908488.

The previous prime is 908471. The next prime is 908491. The reversal of 908489 is 984809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 840889 + 67600 = 917^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 908489 - 2⁸ = 908233 is a prime.

It is a Sophie Germain prime.

Together with 908491, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (908419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454244 + 454245.

It is an arithmetic number, because the mean of its divisors is an integer number (454245).

2⁹⁰⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

908489 is a deficient number, since it is larger than the sum of its proper divisors (1).

908489 is an equidigital number, since it uses as much as digits as its factorization.

908489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 908489 is about 953.1468931912. The cubic root of 908489 is about 96.8515460391.

The spelling of 908489 in words is "nine hundred eight thousand, four hundred eighty-nine".