85397389 has 8 divisors (see below), whose sum is σ = 106469568. Its totient is φ = 66543360.

The previous prime is 85397387. The next prime is 85397399. The reversal of 85397389 is 98379358.

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 85397389 - 2¹ = 85397387 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85397387) 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, 554452 + ... + 554605.

It is an arithmetic number, because the mean of its divisors is an integer number (13308696).

Almost surely, 2^85397389 is an apocalyptic number.

It is an amenable number.

85397389 is a deficient number, since it is larger than the sum of its proper divisors (21072179).

85397389 is a wasteful number, since it uses less digits than its factorization.

85397389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109075.

The product of its digits is 1632960, while the sum is 52.

The square root of 85397389 is about 9241.0707712905. The cubic root of 85397389 is about 440.3670989414.

The spelling of 85397389 in words is "eighty-five million, three hundred ninety-seven thousand, three hundred eighty-nine".