91782383 has 8 divisors (see below), whose sum is σ = 114430080. Its totient is φ = 71518680.

The previous prime is 91782377. The next prime is 91782391. The reversal of 91782383 is 38328719.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91782383 - 2⁴ = 91782367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91782383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91782343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595913 + ... + 596066.

It is an arithmetic number, because the mean of its divisors is an integer number (14303760).

Almost surely, 2^91782383 is an apocalyptic number.

91782383 is a deficient number, since it is larger than the sum of its proper divisors (22647697).

91782383 is a wasteful number, since it uses less digits than its factorization.

91782383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191997.

The product of its digits is 72576, while the sum is 41.

The square root of 91782383 is about 9580.3122600466. The cubic root of 91782383 is about 451.0795201660.

The spelling of 91782383 in words is "ninety-one million, seven hundred eighty-two thousand, three hundred eighty-three".