83085891 has 8 divisors (see below), whose sum is σ = 126607104. Its totient is φ = 47477640.

The previous prime is 83085889. The next prime is 83085907. The reversal of 83085891 is 19858038.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83085891 - 2¹ = 83085889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83085881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1978215 + ... + 1978256.

It is an arithmetic number, because the mean of its divisors is an integer number (15825888).

Almost surely, 2^83085891 is an apocalyptic number.

83085891 is a deficient number, since it is larger than the sum of its proper divisors (43521213).

83085891 is a wasteful number, since it uses less digits than its factorization.

83085891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956481.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 83085891 is about 9115.1462412843. The cubic root of 83085891 is about 436.3574821851.

The spelling of 83085891 in words is "eighty-three million, eighty-five thousand, eight hundred ninety-one".