91836849 has 32 divisors (see below), whose sum is σ = 139869184. Its totient is φ = 53187840.

The previous prime is 91836827. The next prime is 91836851. The reversal of 91836849 is 94863819.

It is not a de Polignac number, because 91836849 - 2¹² = 91832753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91836798 and 91836807.

It is not an unprimeable number, because it can be changed into a prime (91836859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43707 + ... + 45759.

It is an arithmetic number, because the mean of its divisors is an integer number (4370912).

Almost surely, 2^91836849 is an apocalyptic number.

It is an amenable number.

91836849 is a deficient number, since it is larger than the sum of its proper divisors (48032335).

91836849 is a wasteful number, since it uses less digits than its factorization.

91836849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137.

The product of its digits is 373248, while the sum is 48.

The square root of 91836849 is about 9583.1544389100. The cubic root of 91836849 is about 451.1687298745.

The spelling of 91836849 in words is "ninety-one million, eight hundred thirty-six thousand, eight hundred forty-nine".