85139358 has 16 divisors (see below), whose sum is σ = 172193040. Its totient is φ = 28060736.

The previous prime is 85139357. The next prime is 85139371. The reversal of 85139358 is 85393158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85139357) 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, 79185 + ... + 80252.

It is an arithmetic number, because the mean of its divisors is an integer number (10762065).

Almost surely, 2^85139358 is an apocalyptic number.

85139358 is an abundant number, since it is smaller than the sum of its proper divisors (87053682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85139358 is a wasteful number, since it uses less digits than its factorization.

85139358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159531.

The product of its digits is 129600, while the sum is 42.

The square root of 85139358 is about 9227.0991107715. The cubic root of 85139358 is about 439.9231236214.

It can be divided in two parts, 8513 and 9358, that added together give a palindrome (17871).

The spelling of 85139358 in words is "eighty-five million, one hundred thirty-nine thousand, three hundred fifty-eight".