845844539 has 2 divisors, whose sum is σ = 845844540. Its totient is φ = 845844538.

The previous prime is 845844533. The next prime is 845844667. The reversal of 845844539 is 935448548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 845844539 - 2¹⁶ = 845779003 is a prime.

It is a super-2 number, since 2×845844539² = 1430905968312245042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (845844533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422922269 + 422922270.

It is an arithmetic number, because the mean of its divisors is an integer number (422922270).

Almost surely, 2^845844539 is an apocalyptic number.

845844539 is a deficient number, since it is larger than the sum of its proper divisors (1).

845844539 is an equidigital number, since it uses as much as digits as its factorization.

845844539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2764800, while the sum is 50.

The square root of 845844539 is about 29083.4065920758. The cubic root of 845844539 is about 945.7220535313.

The spelling of 845844539 in words is "eight hundred forty-five million, eight hundred forty-four thousand, five hundred thirty-nine".