85210869 has 4 divisors (see below), whose sum is σ = 113614496. Its totient is φ = 56807244.

The previous prime is 85210843. The next prime is 85210891. The reversal of 85210869 is 96801258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 85210869 - 2¹¹ = 85208821 is a prime.

It is a super-2 number, since 2×85210869² = 14521784391470322, 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 (85210969) 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, 14201809 + ... + 14201814.

It is an arithmetic number, because the mean of its divisors is an integer number (28403624).

Almost surely, 2^85210869 is an apocalyptic number.

It is an amenable number.

85210869 is a deficient number, since it is larger than the sum of its proper divisors (28403627).

85210869 is a wasteful number, since it uses less digits than its factorization.

85210869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28403626.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 85210869 is about 9230.9733506278. The cubic root of 85210869 is about 440.0462571892.

The spelling of 85210869 in words is "eighty-five million, two hundred ten thousand, eight hundred sixty-nine".