85939137 has 24 divisors (see below), whose sum is σ = 129336480. Its totient is φ = 57024000.

The previous prime is 85939127. The next prime is 85939207. The reversal of 85939137 is 73193958.

It is a happy number.

It is not a de Polignac number, because 85939137 - 2⁴ = 85939121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85939092 and 85939101.

It is not an unprimeable number, because it can be changed into a prime (85939127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60289 + ... + 61697.

It is an arithmetic number, because the mean of its divisors is an integer number (5389020).

Almost surely, 2^85939137 is an apocalyptic number.

It is an amenable number.

85939137 is a deficient number, since it is larger than the sum of its proper divisors (43397343).

85939137 is a wasteful number, since it uses less digits than its factorization.

85939137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1663 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 85939137 is about 9270.3364016631. The cubic root of 85939137 is about 441.2963439247.

The spelling of 85939137 in words is "eighty-five million, nine hundred thirty-nine thousand, one hundred thirty-seven".