85980291 has 8 divisors (see below), whose sum is σ = 114698064. Its totient is φ = 57291360.

The previous prime is 85980289. The next prime is 85980299. The reversal of 85980291 is 19208958.

It is a happy number.

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

It is not a de Polignac number, because 85980291 - 2¹ = 85980289 is a prime.

It is a super-2 number, since 2×85980291² = 14785220880889362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85980299) 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, 1125 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (14337258).

Almost surely, 2^85980291 is an apocalyptic number.

85980291 is a deficient number, since it is larger than the sum of its proper divisors (28717773).

85980291 is a wasteful number, since it uses less digits than its factorization.

85980291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14421.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 85980291 is about 9272.5557965428. Note that the first 3 decimals coincide. The cubic root of 85980291 is about 441.3667744340.

The spelling of 85980291 in words is "eighty-five million, nine hundred eighty thousand, two hundred ninety-one".