91900116 has 192 divisors, whose sum is σ = 305141760. Its totient is φ = 23224320.

The previous prime is 91900097. The next prime is 91900117. The reversal of 91900116 is 61100919.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 91900116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91900117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 357460 + ... + 357716.

It is an arithmetic number, because the mean of its divisors is an integer number (1589280).

Almost surely, 2^91900116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91900116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152570880).

91900116 is an abundant number, since it is smaller than the sum of its proper divisors (213241644).

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

91900116 is a wasteful number, since it uses less digits than its factorization.

91900116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 91900116 is about 9586.4548191706. The cubic root of 91900116 is about 451.2723104456.

The spelling of 91900116 in words is "ninety-one million, nine hundred thousand, one hundred sixteen".