82193899 has 2 divisors, whose sum is σ = 82193900. Its totient is φ = 82193898.

The previous prime is 82193887. The next prime is 82193921. The reversal of 82193899 is 99839128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82193899 - 2⁹ = 82193387 is a prime.

It is not a weakly prime, because it can be changed into another prime (82193809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41096949 + 41096950.

It is an arithmetic number, because the mean of its divisors is an integer number (41096950).

Almost surely, 2^82193899 is an apocalyptic number.

82193899 is a deficient number, since it is larger than the sum of its proper divisors (1).

82193899 is an equidigital number, since it uses as much as digits as its factorization.

82193899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 49.

The square root of 82193899 is about 9066.0850977696. The cubic root of 82193899 is about 434.7903142305.

The spelling of 82193899 in words is "eighty-two million, one hundred ninety-three thousand, eight hundred ninety-nine".