85080139 has 4 divisors (see below), whose sum is σ = 85112224. Its totient is φ = 85048056.

The previous prime is 85080137. The next prime is 85080161. The reversal of 85080139 is 93108058.

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

It is a cyclic number.

It is not a de Polignac number, because 85080139 - 2¹ = 85080137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85080133) 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, 11667 + ... + 17500.

It is an arithmetic number, because the mean of its divisors is an integer number (21278056).

Almost surely, 2^85080139 is an apocalyptic number.

85080139 is the 5834-th heptagonal number.

85080139 is a deficient number, since it is larger than the sum of its proper divisors (32085).

85080139 is a wasteful number, since it uses less digits than its factorization.

85080139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32084.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 85080139 is about 9223.8895808655. The cubic root of 85080139 is about 439.8211032376.

The spelling of 85080139 in words is "eighty-five million, eighty thousand, one hundred thirty-nine".