85139132 has 24 divisors (see below), whose sum is σ = 161166096. Its totient is φ = 39120768.

The previous prime is 85139107. The next prime is 85139141. The reversal of 85139132 is 23193158.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8603 + ... + 15629.

It is an arithmetic number, because the mean of its divisors is an integer number (6715254).

Almost surely, 2^85139132 is an apocalyptic number.

It is an amenable number.

85139132 is a deficient number, since it is larger than the sum of its proper divisors (76026964).

85139132 is a wasteful number, since it uses less digits than its factorization.

85139132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7277 (or 7275 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 85139132 is about 9227.0868642275. The cubic root of 85139132 is about 439.9227343665.

The spelling of 85139132 in words is "eighty-five million, one hundred thirty-nine thousand, one hundred thirty-two".