85769489 has 8 divisors (see below), whose sum is σ = 92603112. Its totient is φ = 78969600.

The previous prime is 85769483. The next prime is 85769513. The reversal of 85769489 is 98496758.

It can be written as a sum of positive squares in 4 ways, for example, as 43454464 + 42315025 = 6592^2 + 6505^2 .

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 85769489 - 2²⁰ = 84720913 is a prime.

It is a super-2 number, since 2×85769489² = 14712810486642242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85769483) 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, 3014 + ... + 13439.

It is an arithmetic number, because the mean of its divisors is an integer number (11575389).

Almost surely, 2^85769489 is an apocalyptic number.

It is an amenable number.

85769489 is a deficient number, since it is larger than the sum of its proper divisors (6833623).

85769489 is a wasteful number, since it uses less digits than its factorization.

85769489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16867.

The product of its digits is 4354560, while the sum is 56.

The square root of 85769489 is about 9261.1818360294. The cubic root of 85769489 is about 441.0057725535.

The spelling of 85769489 in words is "eighty-five million, seven hundred sixty-nine thousand, four hundred eighty-nine".