91082899 has 2 divisors, whose sum is σ = 91082900. Its totient is φ = 91082898.

The previous prime is 91082891. The next prime is 91082917. The reversal of 91082899 is 99828019.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99828019) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91082899 - 2³ = 91082891 is a prime.

It is not a weakly prime, because it can be changed into another prime (91082891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45541449 + 45541450.

It is an arithmetic number, because the mean of its divisors is an integer number (45541450).

Almost surely, 2^91082899 is an apocalyptic number.

91082899 is a deficient number, since it is larger than the sum of its proper divisors (1).

91082899 is an equidigital number, since it uses as much as digits as its factorization.

91082899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 91082899 is about 9543.7361132839. The cubic root of 91082899 is about 449.9306872668.

The spelling of 91082899 in words is "ninety-one million, eighty-two thousand, eight hundred ninety-nine".