85213893 has 8 divisors (see below), whose sum is σ = 113696800. Its totient is φ = 56770128.

The previous prime is 85213853. The next prime is 85213897. The reversal of 85213893 is 39831258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85213893 - 2⁶ = 85213829 is a prime.

It is a super-2 number, since 2×85213893² = 14522815120430898, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85213897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4258 + ... + 13731.

It is an arithmetic number, because the mean of its divisors is an integer number (14212100).

Almost surely, 2^85213893 is an apocalyptic number.

It is an amenable number.

85213893 is a deficient number, since it is larger than the sum of its proper divisors (28482907).

85213893 is a wasteful number, since it uses less digits than its factorization.

85213893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19571.

The product of its digits is 51840, while the sum is 39.

The square root of 85213893 is about 9231.1371455525. The cubic root of 85213893 is about 440.0514626446.

The spelling of 85213893 in words is "eighty-five million, two hundred thirteen thousand, eight hundred ninety-three".