85499459 has 4 divisors (see below), whose sum is σ = 85824816. Its totient is φ = 85174104.

The previous prime is 85499423. The next prime is 85499461. The reversal of 85499459 is 95499458.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85499459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85499459.

It is not an unprimeable number, because it can be changed into a prime (85499419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162284 + ... + 162809.

It is an arithmetic number, because the mean of its divisors is an integer number (21456204).

Almost surely, 2^85499459 is an apocalyptic number.

85499459 is a deficient number, since it is larger than the sum of its proper divisors (325357).

85499459 is a wasteful number, since it uses less digits than its factorization.

85499459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325356.

The product of its digits is 2332800, while the sum is 53.

The square root of 85499459 is about 9246.5917504776. The cubic root of 85499459 is about 440.5424765662.

Subtracting 85499459 from its reverse (95499458), we obtain a palindrome (9999999).

It can be divided in two parts, 85499 and 459, that added together give a palindrome (85958).

The spelling of 85499459 in words is "eighty-five million, four hundred ninety-nine thousand, four hundred fifty-nine".