85291092 has 18 divisors (see below), whose sum is σ = 215597018. Its totient is φ = 28430352.

The previous prime is 85291081. The next prime is 85291097. The reversal of 85291092 is 29019258.

It can be written as a sum of positive squares in only one way, i.e., 85266756 + 24336 = 9234^2 + 156^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2369197 = 85291092 / (8 + 5 + 2 + 9 + 1 + 0 + 9 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85291097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1184563 + ... + 1184634.

Almost surely, 2^85291092 is an apocalyptic number.

It is an amenable number.

85291092 is an abundant number, since it is smaller than the sum of its proper divisors (130305926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85291092 is a wasteful number, since it uses less digits than its factorization.

85291092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369207 (or 2369202 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 85291092 is about 9235.3176447808. The cubic root of 85291092 is about 440.1843098368.

The spelling of 85291092 in words is "eighty-five million, two hundred ninety-one thousand, ninety-two".