85079887 has 4 divisors (see below), whose sum is σ = 85099896. Its totient is φ = 85059880.

The previous prime is 85079867. The next prime is 85079899. The reversal of 85079887 is 78897058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78897058 = 2 ⋅39448529.

It is a cyclic number.

It is not a de Polignac number, because 85079887 - 2⁷ = 85079759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85079807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808 + ... + 13069.

It is an arithmetic number, because the mean of its divisors is an integer number (21274974).

Almost surely, 2^85079887 is an apocalyptic number.

85079887 is a deficient number, since it is larger than the sum of its proper divisors (20009).

85079887 is a wasteful number, since it uses less digits than its factorization.

85079887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20008.

The product of its (nonzero) digits is 1128960, while the sum is 52.

The square root of 85079887 is about 9223.8759206746. The cubic root of 85079887 is about 439.8206689998.

The spelling of 85079887 in words is "eighty-five million, seventy-nine thousand, eight hundred eighty-seven".