85393021 has 8 divisors (see below), whose sum is σ = 97670144. Its totient is φ = 73135440.

The previous prime is 85393019. The next prime is 85393039. The reversal of 85393021 is 12039358.

It is a happy number.

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

It is not a de Polignac number, because 85393021 - 2¹ = 85393019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85393051) 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, 6151 + ... + 14443.

It is an arithmetic number, because the mean of its divisors is an integer number (12208768).

Almost surely, 2^85393021 is an apocalyptic number.

It is an amenable number.

85393021 is a deficient number, since it is larger than the sum of its proper divisors (12277123).

85393021 is a wasteful number, since it uses less digits than its factorization.

85393021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9771.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 85393021 is about 9240.8344320197. The cubic root of 85393021 is about 440.3595906858.

The spelling of 85393021 in words is "eighty-five million, three hundred ninety-three thousand, twenty-one".