85469489 has 16 divisors (see below), whose sum is σ = 103678848. Its totient is φ = 68781312.

The previous prime is 85469411. The next prime is 85469491. The reversal of 85469489 is 98496458.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 85469489 - 2²⁰ = 84420913 is a prime.

It is a super-2 number, since 2×85469489² = 14610067099842242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85469489.

It is not an unprimeable number, because it can be changed into a prime (85469089) 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, 75959 + ... + 77075.

It is an arithmetic number, because the mean of its divisors is an integer number (6479928).

Almost surely, 2^85469489 is an apocalyptic number.

It is an amenable number.

85469489 is a deficient number, since it is larger than the sum of its proper divisors (18209359).

85469489 is a wasteful number, since it uses less digits than its factorization.

85469489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784.

The product of its digits is 2488320, while the sum is 53.

The square root of 85469489 is about 9244.9710113120. The cubic root of 85469489 is about 440.4909963145.

It can be divided in two parts, 85469 and 489, that added together give a palindrome (85958).

The spelling of 85469489 in words is "eighty-five million, four hundred sixty-nine thousand, four hundred eighty-nine".