85481994 has 32 divisors (see below), whose sum is σ = 184613184. Its totient is φ = 26231040.

The previous prime is 85481983. The next prime is 85481999. The reversal of 85481994 is 49918458.

It is not an unprimeable number, because it can be changed into a prime (85481999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32509 + ... + 35039.

It is an arithmetic number, because the mean of its divisors is an integer number (5769162).

Almost surely, 2^85481994 is an apocalyptic number.

85481994 is an abundant number, since it is smaller than the sum of its proper divisors (99131190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85481994 is a wasteful number, since it uses less digits than its factorization.

85481994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982.

The product of its digits is 414720, while the sum is 48.

The square root of 85481994 is about 9245.6473002165. The cubic root of 85481994 is about 440.5124779425.

The spelling of 85481994 in words is "eighty-five million, four hundred eighty-one thousand, nine hundred ninety-four".