91489016 has 8 divisors (see below), whose sum is σ = 171541920. Its totient is φ = 45744504.

The previous prime is 91489007. The next prime is 91489037. The reversal of 91489016 is 61098419.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5718056 + ... + 5718071.

It is an arithmetic number, because the mean of its divisors is an integer number (21442740).

Almost surely, 2^91489016 is an apocalyptic number.

It is an amenable number.

91489016 is a deficient number, since it is larger than the sum of its proper divisors (80052904).

91489016 is a wasteful number, since it uses less digits than its factorization.

91489016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11436133 (or 11436129 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 91489016 is about 9564.9890747455. The cubic root of 91489016 is about 450.5984071813.

The spelling of 91489016 in words is "ninety-one million, four hundred eighty-nine thousand, sixteen".