85390539 has 16 divisors (see below), whose sum is σ = 123151392. Its totient is φ = 52316928.

The previous prime is 85390537. The next prime is 85390549. The reversal of 85390539 is 93509358.

It is not a de Polignac number, because 85390539 - 2¹ = 85390537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85390539.

It is not an unprimeable number, because it can be changed into a prime (85390537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4389 + ... + 13785.

It is an arithmetic number, because the mean of its divisors is an integer number (7696962).

Almost surely, 2^85390539 is an apocalyptic number.

85390539 is a deficient number, since it is larger than the sum of its proper divisors (37760853).

85390539 is a wasteful number, since it uses less digits than its factorization.

85390539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9646.

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 85390539 is about 9240.7001358122. The cubic root of 85390539 is about 440.3553242048.

The spelling of 85390539 in words is "eighty-five million, three hundred ninety thousand, five hundred thirty-nine".