86283991 has 4 divisors (see below), whose sum is σ = 86378800. Its totient is φ = 86189184.

The previous prime is 86283983. The next prime is 86284001. The reversal of 86283991 is 19938268.

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 86283991 - 2³ = 86283983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86283941) 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, 46026 + ... + 47863.

It is an arithmetic number, because the mean of its divisors is an integer number (21594700).

Almost surely, 2^86283991 is an apocalyptic number.

86283991 is a deficient number, since it is larger than the sum of its proper divisors (94809).

86283991 is an equidigital number, since it uses as much as digits as its factorization.

86283991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94808.

The product of its digits is 186624, while the sum is 46.

The square root of 86283991 is about 9288.9176441607. The cubic root of 86283991 is about 441.8858297286.

The spelling of 86283991 in words is "eighty-six million, two hundred eighty-three thousand, nine hundred ninety-one".