85115944 has 8 divisors (see below), whose sum is σ = 159592410. Its totient is φ = 42557968.

The previous prime is 85115911. The next prime is 85115969. The reversal of 85115944 is 44951158.

It can be written as a sum of positive squares in only one way, i.e., 83503044 + 1612900 = 9138^2 + 1270^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×85115944² = 14489447846022272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5319739 + ... + 5319754.

Almost surely, 2^85115944 is an apocalyptic number.

It is an amenable number.

85115944 is a deficient number, since it is larger than the sum of its proper divisors (74476466).

85115944 is a wasteful number, since it uses less digits than its factorization.

85115944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639499 (or 10639495 counting only the distinct ones).

The product of its digits is 28800, while the sum is 37.

The square root of 85115944 is about 9225.8302607408. The cubic root of 85115944 is about 439.8827924724.

The spelling of 85115944 in words is "eighty-five million, one hundred fifteen thousand, nine hundred forty-four".