91641416 has 16 divisors (see below), whose sum is σ = 172013100. Its totient is φ = 45771264.

The previous prime is 91641413. The next prime is 91641439. The reversal of 91641416 is 61414619.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87422500 + 4218916 = 9350^2 + 2054^2 .

It is not an unprimeable number, because it can be changed into a prime (91641413) 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, 2396 + ... + 13748.

Almost surely, 2^91641416 is an apocalyptic number.

It is an amenable number.

91641416 is a deficient number, since it is larger than the sum of its proper divisors (80371684).

91641416 is a wasteful number, since it uses less digits than its factorization.

91641416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12368 (or 12364 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 91641416 is about 9572.9523136805. The cubic root of 91641416 is about 450.8484667159.

The spelling of 91641416 in words is "ninety-one million, six hundred forty-one thousand, four hundred sixteen".