85814139 has 8 divisors (see below), whose sum is σ = 114875712. Its totient is φ = 56981000.

The previous prime is 85814101. The next prime is 85814167. The reversal of 85814139 is 93141858.

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 85814139 - 2⁸ = 85813883 is a prime.

It is a super-2 number, since 2×85814139² = 14728132904622642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85814097 and 85814106.

It is not an unprimeable number, because it can be changed into a prime (85914139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56229 + ... + 57734.

It is an arithmetic number, because the mean of its divisors is an integer number (14359464).

Almost surely, 2^85814139 is an apocalyptic number.

85814139 is a deficient number, since it is larger than the sum of its proper divisors (29061573).

85814139 is a wasteful number, since it uses less digits than its factorization.

85814139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114217.

The product of its digits is 34560, while the sum is 39.

The square root of 85814139 is about 9263.5921218499. The cubic root of 85814139 is about 441.0822857443.

It can be divided in two parts, 8581 and 4139, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 85814139 in words is "eighty-five million, eight hundred fourteen thousand, one hundred thirty-nine".