91943849 has 8 divisors (see below), whose sum is σ = 92747520. Its totient is φ = 91143936.

The previous prime is 91943843. The next prime is 91943879. The reversal of 91943849 is 94834919.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91943849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91943843) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 68624 + ... + 69950.

It is an arithmetic number, because the mean of its divisors is an integer number (11593440).

Almost surely, 2^91943849 is an apocalyptic number.

It is an amenable number.

91943849 is a deficient number, since it is larger than the sum of its proper divisors (803671).

91943849 is a wasteful number, since it uses less digits than its factorization.

91943849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879.

The product of its digits is 279936, while the sum is 47.

The square root of 91943849 is about 9588.7355266479. The cubic root of 91943849 is about 451.3438822168.

The spelling of 91943849 in words is "ninety-one million, nine hundred forty-three thousand, eight hundred forty-nine".