85999291 has 8 divisors (see below), whose sum is σ = 98348000. Its totient is φ = 73666368.

The previous prime is 85999283. The next prime is 85999307. The reversal of 85999291 is 19299958.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85999291 - 2³ = 85999283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85999201) 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, 12085 + ... + 17833.

It is an arithmetic number, because the mean of its divisors is an integer number (12293500).

Almost surely, 2^85999291 is an apocalyptic number.

85999291 is a deficient number, since it is larger than the sum of its proper divisors (12348709).

85999291 is a wasteful number, since it uses less digits than its factorization.

85999291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893.

The product of its digits is 524880, while the sum is 52.

The square root of 85999291 is about 9273.5802686988. The cubic root of 85999291 is about 441.3992832449.

The spelling of 85999291 in words is "eighty-five million, nine hundred ninety-nine thousand, two hundred ninety-one".