91886741 has 4 divisors (see below), whose sum is σ = 92700012. Its totient is φ = 91073472.

The previous prime is 91886731. The next prime is 91886749. The reversal of 91886741 is 14768819.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14768819 = 13 ⋅1136063.

It can be written as a sum of positive squares in 2 ways, for example, as 2961841 + 88924900 = 1721^2 + 9430^2 .

It is a cyclic number.

It is not a de Polignac number, because 91886741 - 2¹⁴ = 91870357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91886692 and 91886701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91886749) 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 3 ways as a sum of consecutive naturals, for example, 406466 + ... + 406691.

It is an arithmetic number, because the mean of its divisors is an integer number (23175003).

Almost surely, 2^91886741 is an apocalyptic number.

It is an amenable number.

91886741 is a deficient number, since it is larger than the sum of its proper divisors (813271).

91886741 is a wasteful number, since it uses less digits than its factorization.

91886741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813270.

The product of its digits is 96768, while the sum is 44.

The square root of 91886741 is about 9585.7571949221. The cubic root of 91886741 is about 451.2504168933.

The spelling of 91886741 in words is "ninety-one million, eight hundred eighty-six thousand, seven hundred forty-one".