845903249 has 2 divisors, whose sum is σ = 845903250. Its totient is φ = 845903248.

The previous prime is 845903203. The next prime is 845903273. The reversal of 845903249 is 942309548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 799758400 + 46144849 = 28280^2 + 6793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-845903249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (845903299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422951624 + 422951625.

It is an arithmetic number, because the mean of its divisors is an integer number (422951625).

Almost surely, 2^845903249 is an apocalyptic number.

It is an amenable number.

845903249 is a deficient number, since it is larger than the sum of its proper divisors (1).

845903249 is an equidigital number, since it uses as much as digits as its factorization.

845903249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 845903249 is about 29084.4159129937. The cubic root of 845903249 is about 945.7439338551.

The spelling of 845903249 in words is "eight hundred forty-five million, nine hundred three thousand, two hundred forty-nine".