102191699 has 4 divisors (see below), whose sum is σ = 103203600. Its totient is φ = 101179800.

The previous prime is 102191657. The next prime is 102191701. The reversal of 102191699 is 996191201.

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

It is a cyclic number.

It is not a de Polignac number, because 102191699 - 2¹⁶ = 102126163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102191629) 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, 505799 + ... + 506000.

It is an arithmetic number, because the mean of its divisors is an integer number (25800900).

Almost surely, 2^102191699 is an apocalyptic number.

102191699 is a deficient number, since it is larger than the sum of its proper divisors (1011901).

102191699 is a wasteful number, since it uses less digits than its factorization.

102191699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011900.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 102191699 is about 10108.9909981165. The cubic root of 102191699 is about 467.5253957817.

The spelling of 102191699 in words is "one hundred two million, one hundred ninety-one thousand, six hundred ninety-nine".