91883853 has 6 divisors (see below), whose sum is σ = 132721134. Its totient is φ = 61255896.

The previous prime is 91883851. The next prime is 91883863. The reversal of 91883853 is 35838819.

It can be written as a sum of positive squares in only one way, i.e., 90212004 + 1671849 = 9498^2 + 1293^2 .

It is not a de Polignac number, because 91883853 - 2¹ = 91883851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91883799 and 91883808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91883851) 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 5 ways as a sum of consecutive naturals, for example, 5104650 + ... + 5104667.

It is an arithmetic number, because the mean of its divisors is an integer number (22120189).

Almost surely, 2^91883853 is an apocalyptic number.

It is an amenable number.

91883853 is a deficient number, since it is larger than the sum of its proper divisors (40837281).

91883853 is a wasteful number, since it uses less digits than its factorization.

91883853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10209323 (or 10209320 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 91883853 is about 9585.6065535781. The cubic root of 91883853 is about 451.2456892440.

It can be divided in two parts, 9188 and 3853, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 91883853 in words is "ninety-one million, eight hundred eighty-three thousand, eight hundred fifty-three".