85243699 has 2 divisors, whose sum is σ = 85243700. Its totient is φ = 85243698.

The previous prime is 85243649. The next prime is 85243733. The reversal of 85243699 is 99634258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85243699 - 2⁹ = 85243187 is a prime.

It is a Chen prime.

It is equal to p_4956985 and since 85243699 and 4956985 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (85243619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42621849 + 42621850.

It is an arithmetic number, because the mean of its divisors is an integer number (42621850).

Almost surely, 2^85243699 is an apocalyptic number.

85243699 is a deficient number, since it is larger than the sum of its proper divisors (1).

85243699 is an equidigital number, since it uses as much as digits as its factorization.

85243699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 85243699 is about 9232.7514317239. The cubic root of 85243699 is about 440.1027635318.

It can be divided in two parts, 852 and 43699, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 85243699 in words is "eighty-five million, two hundred forty-three thousand, six hundred ninety-nine".