85509799 has 8 divisors (see below), whose sum is σ = 86615568. Its totient is φ = 84409920.

The previous prime is 85509769. The next prime is 85509817. The reversal of 85509799 is 99790558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85509799 - 2¹⁵ = 85477031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85509769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32659 + ... + 35179.

It is an arithmetic number, because the mean of its divisors is an integer number (10826946).

Almost surely, 2^85509799 is an apocalyptic number.

85509799 is a deficient number, since it is larger than the sum of its proper divisors (1105769).

85509799 is a wasteful number, since it uses less digits than its factorization.

85509799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945.

The product of its (nonzero) digits is 1020600, while the sum is 52.

The square root of 85509799 is about 9247.1508585077. The cubic root of 85509799 is about 440.5602350630.

The spelling of 85509799 in words is "eighty-five million, five hundred nine thousand, seven hundred ninety-nine".