85320389 has 8 divisors (see below), whose sum is σ = 106373568. Its totient is φ = 66483360.

The previous prime is 85320377. The next prime is 85320419. The reversal of 85320389 is 98302358.

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

It is a cyclic number.

It is not a de Polignac number, because 85320389 - 2²⁰ = 84271813 is a prime.

It is a super-2 number, since 2×85320389² = 14559137558222642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85320589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553952 + ... + 554105.

It is an arithmetic number, because the mean of its divisors is an integer number (13296696).

Almost surely, 2^85320389 is an apocalyptic number.

It is an amenable number.

85320389 is a deficient number, since it is larger than the sum of its proper divisors (21053179).

85320389 is a wasteful number, since it uses less digits than its factorization.

85320389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108075.

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

The square root of 85320389 is about 9236.9036478682. The cubic root of 85320389 is about 440.2347043275.

The spelling of 85320389 in words is "eighty-five million, three hundred twenty thousand, three hundred eighty-nine".