91088941 has 4 divisors (see below), whose sum is σ = 96447132. Its totient is φ = 85730752.

The previous prime is 91088909. The next prime is 91089001. The reversal of 91088941 is 14988019.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61168041 + 29920900 = 7821^2 + 5470^2 .

It is a cyclic number.

It is not a de Polignac number, because 91088941 - 2⁵ = 91088909 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91088894 and 91088903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91088341) 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, 2679070 + ... + 2679103.

It is an arithmetic number, because the mean of its divisors is an integer number (24111783).

Almost surely, 2^91088941 is an apocalyptic number.

It is an amenable number.

91088941 is a deficient number, since it is larger than the sum of its proper divisors (5358191).

91088941 is a wasteful number, since it uses less digits than its factorization.

91088941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5358190.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 91088941 is about 9544.0526507349. The cubic root of 91088941 is about 449.9406357904.

It can be divided in two parts, 91088 and 941, that added together give a palindrome (92029).

The spelling of 91088941 in words is "ninety-one million, eighty-eight thousand, nine hundred forty-one".