85133893 has 16 divisors (see below), whose sum is σ = 93389296. Its totient is φ = 77137920.

The previous prime is 85133869. The next prime is 85133897. The reversal of 85133893 is 39833158.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 22439169 + 62694724 = 4737^2 + 7918^2 .

It is a cyclic number.

It is not a de Polignac number, because 85133893 - 2¹⁷ = 85002821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85133897) 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, 228055 + ... + 228427.

It is an arithmetic number, because the mean of its divisors is an integer number (5836831).

Almost surely, 2^85133893 is an apocalyptic number.

It is an amenable number.

85133893 is a deficient number, since it is larger than the sum of its proper divisors (8255403).

85133893 is a wasteful number, since it uses less digits than its factorization.

85133893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664.

The product of its digits is 77760, while the sum is 40.

The square root of 85133893 is about 9226.8029674422. The cubic root of 85133893 is about 439.9137106958.

The spelling of 85133893 in words is "eighty-five million, one hundred thirty-three thousand, eight hundred ninety-three".