91001416 has 32 divisors (see below), whose sum is σ = 190476000. Its totient is φ = 40400640.

The previous prime is 91001381. The next prime is 91001429. The reversal of 91001416 is 61410019.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8241 + ... + 15808.

It is an arithmetic number, because the mean of its divisors is an integer number (5952375).

Almost surely, 2^91001416 is an apocalyptic number.

It is an amenable number.

91001416 is an abundant number, since it is smaller than the sum of its proper divisors (99474584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91001416 is a wasteful number, since it uses less digits than its factorization.

91001416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24109 (or 24105 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 91001416 is about 9539.4662324472. The cubic root of 91001416 is about 449.7964775136.

The spelling of 91001416 in words is "ninety-one million, one thousand, four hundred sixteen".