85139763 has 4 divisors (see below), whose sum is σ = 113519688. Its totient is φ = 56759840.

The previous prime is 85139759. The next prime is 85139777. The reversal of 85139763 is 36793158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85139763 - 2² = 85139759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85139753) 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 3 ways as a sum of consecutive naturals, for example, 14189958 + ... + 14189963.

It is an arithmetic number, because the mean of its divisors is an integer number (28379922).

Almost surely, 2^85139763 is an apocalyptic number.

85139763 is a deficient number, since it is larger than the sum of its proper divisors (28379925).

85139763 is a wasteful number, since it uses less digits than its factorization.

85139763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28379924.

The product of its digits is 136080, while the sum is 42.

The square root of 85139763 is about 9227.1210569711. The cubic root of 85139763 is about 439.9238211780.

The spelling of 85139763 in words is "eighty-five million, one hundred thirty-nine thousand, seven hundred sixty-three".