85349889 has 8 divisors (see below), whose sum is σ = 126444320. Its totient is φ = 56899908.

The previous prime is 85349879. The next prime is 85349923. The reversal of 85349889 is 98894358.

It is a happy number.

It is not a de Polignac number, because 85349889 - 2⁵ = 85349857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85349819) 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, 1580527 + ... + 1580580.

It is an arithmetic number, because the mean of its divisors is an integer number (15805540).

Almost surely, 2^85349889 is an apocalyptic number.

It is an amenable number.

85349889 is a deficient number, since it is larger than the sum of its proper divisors (41094431).

85349889 is a wasteful number, since it uses less digits than its factorization.

85349889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161116 (or 3161110 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 85349889 is about 9238.5003653190. The cubic root of 85349889 is about 440.2854363485.

The spelling of 85349889 in words is "eighty-five million, three hundred forty-nine thousand, eight hundred eighty-nine".