85849807 has 2 divisors, whose sum is σ = 85849808. Its totient is φ = 85849806.

The previous prime is 85849793. The next prime is 85849837. The reversal of 85849807 is 70894858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85849807 - 2²³ = 77461199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85849837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42924903 + 42924904.

It is an arithmetic number, because the mean of its divisors is an integer number (42924904).

Almost surely, 2^85849807 is an apocalyptic number.

85849807 is a deficient number, since it is larger than the sum of its proper divisors (1).

85849807 is an equidigital number, since it uses as much as digits as its factorization.

85849807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 85849807 is about 9265.5170929636. The cubic root of 85849807 is about 441.1433881218.

The spelling of 85849807 in words is "eighty-five million, eight hundred forty-nine thousand, eight hundred seven".