85469231 has 16 divisors (see below), whose sum is σ = 89424000. Its totient is φ = 81639168.

The previous prime is 85469227. The next prime is 85469243. The reversal of 85469231 is 13296458.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 85469231 - 2² = 85469227 is a prime.

It is a super-2 number, since 2×85469231² = 14609978895462722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85469221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573545 + ... + 573693.

It is an arithmetic number, because the mean of its divisors is an integer number (5589000).

Almost surely, 2^85469231 is an apocalyptic number.

85469231 is a deficient number, since it is larger than the sum of its proper divisors (3954769).

85469231 is a wasteful number, since it uses less digits than its factorization.

85469231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its digits is 51840, while the sum is 38.

The square root of 85469231 is about 9244.9570577694. The cubic root of 85469231 is about 440.4905530890.

The spelling of 85469231 in words is "eighty-five million, four hundred sixty-nine thousand, two hundred thirty-one".