91789082 has 64 divisors (see below), whose sum is σ = 179262720. Its totient is φ = 34214400.

The previous prime is 91789081. The next prime is 91789091. The reversal of 91789082 is 28098719.

It is not an unprimeable number, because it can be changed into a prime (91789081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 507032 + ... + 507212.

It is an arithmetic number, because the mean of its divisors is an integer number (2800980).

Almost surely, 2^91789082 is an apocalyptic number.

91789082 is a deficient number, since it is larger than the sum of its proper divisors (87473638).

91789082 is a wasteful number, since it uses less digits than its factorization.

91789082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 91789082 is about 9580.6618769269. The cubic root of 91789082 is about 451.0904943424.

The spelling of 91789082 in words is "ninety-one million, seven hundred eighty-nine thousand, eighty-two".