91516347 has 12 divisors (see below), whose sum is σ = 142358944. Its totient is φ = 56317680.

The previous prime is 91516343. The next prime is 91516363. The reversal of 91516347 is 74361519.

91516347 is a `hidden beast` number, since 9 + 15 + 1 + 634 + 7 = 666.

It is not a de Polignac number, because 91516347 - 2² = 91516343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91516343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390979 + ... + 391212.

Almost surely, 2^91516347 is an apocalyptic number.

91516347 is a deficient number, since it is larger than the sum of its proper divisors (50842597).

91516347 is a wasteful number, since it uses less digits than its factorization.

91516347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782210 (or 782207 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 91516347 is about 9566.4176680720. The cubic root of 91516347 is about 450.6432725997.

The spelling of 91516347 in words is "ninety-one million, five hundred sixteen thousand, three hundred forty-seven".