91699344 has 160 divisors (see below), whose sum is σ = 299980800. Its totient is φ = 26547840.

The previous prime is 91699337. The next prime is 91699351. The reversal of 91699344 is 44399619.

It is an interprime number because it is at equal distance from previous prime (91699337) and next prime (91699351).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 91699344.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 108877 + ... + 109715.

It is an arithmetic number, because the mean of its divisors is an integer number (1874880).

Almost surely, 2^91699344 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 91699344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149990400).

91699344 is an abundant number, since it is smaller than the sum of its proper divisors (208281456).

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

91699344 is a wasteful number, since it uses less digits than its factorization.

91699344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890 (or 878 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 91699344 is about 9575.9774435825. The cubic root of 91699344 is about 450.9434428745.

The spelling of 91699344 in words is "ninety-one million, six hundred ninety-nine thousand, three hundred forty-four".