85038989 has 8 divisors (see below), whose sum is σ = 97250688. Its totient is φ = 72843120.

The previous prime is 85038971. The next prime is 85039007. The reversal of 85038989 is 98983058.

It is an interprime number because it is at equal distance from previous prime (85038971) and next prime (85039007).

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

It is a de Polignac number, because none of the positive numbers 2^k-85038989 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85038929) 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, 11699 + ... + 17519.

It is an arithmetic number, because the mean of its divisors is an integer number (12156336).

Almost surely, 2^85038989 is an apocalyptic number.

It is an amenable number.

85038989 is a deficient number, since it is larger than the sum of its proper divisors (12211699).

85038989 is a wasteful number, since it uses less digits than its factorization.

85038989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7915.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 85038989 is about 9221.6586902791. The cubic root of 85038989 is about 439.7501836032.

It can be divided in two parts, 8503 and 8989, that multiplied together give a palindrome (76433467).

The spelling of 85038989 in words is "eighty-five million, thirty-eight thousand, nine hundred eighty-nine".