85195989 has 8 divisors (see below), whose sum is σ = 126216320. Its totient is φ = 56797308.

The previous prime is 85195987. The next prime is 85196003. The reversal of 85195989 is 98959158.

It is not a de Polignac number, because 85195989 - 2¹ = 85195987 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 (85195987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1577677 + ... + 1577730.

It is an arithmetic number, because the mean of its divisors is an integer number (15777040).

Almost surely, 2^85195989 is an apocalyptic number.

It is an amenable number.

85195989 is a deficient number, since it is larger than the sum of its proper divisors (41020331).

85195989 is a wasteful number, since it uses less digits than its factorization.

85195989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155416 (or 3155410 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 54.

The square root of 85195989 is about 9230.1673332611. The cubic root of 85195989 is about 440.0206412493.

The spelling of 85195989 in words is "eighty-five million, one hundred ninety-five thousand, nine hundred eighty-nine".