85139635 has 8 divisors (see below), whose sum is σ = 116762976. Its totient is φ = 58381440.

The previous prime is 85139633. The next prime is 85139683. The reversal of 85139635 is 53693158.

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

It is not a de Polignac number, because 85139635 - 2¹ = 85139633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85139633) 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 7 ways as a sum of consecutive naturals, for example, 1216246 + ... + 1216315.

It is an arithmetic number, because the mean of its divisors is an integer number (14595372).

Almost surely, 2^85139635 is an apocalyptic number.

85139635 is a deficient number, since it is larger than the sum of its proper divisors (31623341).

85139635 is a wasteful number, since it uses less digits than its factorization.

85139635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432573.

The product of its digits is 97200, while the sum is 40.

The square root of 85139635 is about 9227.1141208939. The cubic root of 85139635 is about 439.9236007159.

The spelling of 85139635 in words is "eighty-five million, one hundred thirty-nine thousand, six hundred thirty-five".