91343868 has 192 divisors, whose sum is σ = 288583680. Its totient is φ = 21954240.

The previous prime is 91343851. The next prime is 91343891. The reversal of 91343868 is 86834319.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2124255 + ... + 2124297.

It is an arithmetic number, because the mean of its divisors is an integer number (1503040).

Almost surely, 2^91343868 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 91343868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144291840).

91343868 is an abundant number, since it is smaller than the sum of its proper divisors (197239812).

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

91343868 is a wasteful number, since it uses less digits than its factorization.

91343868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 85 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 91343868 is about 9557.3986000376. The cubic root of 91343868 is about 450.3599884848.

The spelling of 91343868 in words is "ninety-one million, three hundred forty-three thousand, eight hundred sixty-eight".