85143992 has 16 divisors (see below), whose sum is σ = 159815040. Its totient is φ = 42526656.

The previous prime is 85143979. The next prime is 85144009. The reversal of 85143992 is 29934158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3113 + ... + 13415.

It is an arithmetic number, because the mean of its divisors is an integer number (9988440).

Almost surely, 2^85143992 is an apocalyptic number.

It is an amenable number.

85143992 is a deficient number, since it is larger than the sum of its proper divisors (74671048).

85143992 is a wasteful number, since it uses less digits than its factorization.

85143992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11342 (or 11338 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 85143992 is about 9227.3502155277. The cubic root of 85143992 is about 439.9311049155.

The spelling of 85143992 in words is "eighty-five million, one hundred forty-three thousand, nine hundred ninety-two".