85079899 has 2 divisors, whose sum is σ = 85079900. Its totient is φ = 85079898.

The previous prime is 85079867. The next prime is 85079927. The reversal of 85079899 is 99897058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85079899 - 2⁵ = 85079867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85079809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42539949 + 42539950.

It is an arithmetic number, because the mean of its divisors is an integer number (42539950).

Almost surely, 2^85079899 is an apocalyptic number.

85079899 is a deficient number, since it is larger than the sum of its proper divisors (1).

85079899 is an equidigital number, since it uses as much as digits as its factorization.

85079899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 85079899 is about 9223.8765711603. The cubic root of 85079899 is about 439.8206896778.

The spelling of 85079899 in words is "eighty-five million, seventy-nine thousand, eight hundred ninety-nine".