85439889607 has 8 divisors (see below), whose sum is σ = 89158510080. Its totient is φ = 81721589400.

The previous prime is 85439889553. The next prime is 85439889641. The reversal of 85439889607 is 70698893458.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85439889607 is a prime.

It is a super-2 number, since 2×85439889607² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85439089607) 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, 581494 + ... + 713452.

It is an arithmetic number, because the mean of its divisors is an integer number (11144813760).

Almost surely, 2^85439889607 is an apocalyptic number.

85439889607 is a deficient number, since it is larger than the sum of its proper divisors (3718620473).

85439889607 is a wasteful number, since it uses less digits than its factorization.

85439889607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160133.

The product of its (nonzero) digits is 104509440, while the sum is 67.

The spelling of 85439889607 in words is "eighty-five billion, four hundred thirty-nine million, eight hundred eighty-nine thousand, six hundred seven".