85990313 has 4 divisors (see below), whose sum is σ = 86538180. Its totient is φ = 85442448.

The previous prime is 85990309. The next prime is 85990321. The reversal of 85990313 is 31309958.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11202409 + 74787904 = 3347^2 + 8648^2 .

It is a cyclic number.

It is not a de Polignac number, because 85990313 - 2² = 85990309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85990363) 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 3 ways as a sum of consecutive naturals, for example, 273698 + ... + 274011.

It is an arithmetic number, because the mean of its divisors is an integer number (21634545).

Almost surely, 2^85990313 is an apocalyptic number.

It is an amenable number.

85990313 is a deficient number, since it is larger than the sum of its proper divisors (547867).

85990313 is a wasteful number, since it uses less digits than its factorization.

85990313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547866.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 85990313 is about 9273.0961927503. The cubic root of 85990313 is about 441.3839225730.

The spelling of 85990313 in words is "eighty-five million, nine hundred ninety thousand, three hundred thirteen".