91836349 has 4 divisors (see below), whose sum is σ = 100185120. Its totient is φ = 83487580.

The previous prime is 91836317. The next prime is 91836361. The reversal of 91836349 is 94363819.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 91836349 - 2⁵ = 91836317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91836379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4174369 + ... + 4174390.

It is an arithmetic number, because the mean of its divisors is an integer number (25046280).

Almost surely, 2^91836349 is an apocalyptic number.

It is an amenable number.

91836349 is a deficient number, since it is larger than the sum of its proper divisors (8348771).

91836349 is a wasteful number, since it uses less digits than its factorization.

91836349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8348770.

The product of its digits is 139968, while the sum is 43.

The square root of 91836349 is about 9583.1283514310. The cubic root of 91836349 is about 451.1679110863.

The spelling of 91836349 in words is "ninety-one million, eight hundred thirty-six thousand, three hundred forty-nine".