92086991 has 4 divisors (see below), whose sum is σ = 92125800. Its totient is φ = 92048184.

The previous prime is 92086979. The next prime is 92086993. The reversal of 92086991 is 19968029.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 92086991 - 2⁶ = 92086927 is a prime.

It is a super-2 number, since 2×92086991² = 16960027822868162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (92086993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15596 + ... + 20673.

It is an arithmetic number, because the mean of its divisors is an integer number (23031450).

Almost surely, 2^92086991 is an apocalyptic number.

92086991 is a deficient number, since it is larger than the sum of its proper divisors (38809).

92086991 is a wasteful number, since it uses less digits than its factorization.

92086991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38808.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 92086991 is about 9596.1966945243. The cubic root of 92086991 is about 451.5779844014.

The spelling of 92086991 in words is "ninety-two million, eighty-six thousand, nine hundred ninety-one".