85854989 has 8 divisors (see below), whose sum is σ = 93830880. Its totient is φ = 77907600.

The previous prime is 85854983. The next prime is 85855001. The reversal of 85854989 is 98945858.

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 85854989 - 2⁸ = 85854733 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85854983) 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, 554 + ... + 13115.

It is an arithmetic number, because the mean of its divisors is an integer number (11728860).

Almost surely, 2^85854989 is an apocalyptic number.

It is an amenable number.

85854989 is a deficient number, since it is larger than the sum of its proper divisors (7975891).

85854989 is a wasteful number, since it uses less digits than its factorization.

85854989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14251.

The product of its digits is 4147200, while the sum is 56.

The square root of 85854989 is about 9265.7967277509. The cubic root of 85854989 is about 441.1522639292.

The spelling of 85854989 in words is "eighty-five million, eight hundred fifty-four thousand, nine hundred eighty-nine".