102199397 has 4 divisors (see below), whose sum is σ = 102945516. Its totient is φ = 101453280.

The previous prime is 102199369. The next prime is 102199403. The reversal of 102199397 is 793991201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 82609921 + 19589476 = 9089^2 + 4426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102199397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102199897) 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, 372854 + ... + 373127.

It is an arithmetic number, because the mean of its divisors is an integer number (25736379).

Almost surely, 2^102199397 is an apocalyptic number.

It is an amenable number.

102199397 is a deficient number, since it is larger than the sum of its proper divisors (746119).

102199397 is an equidigital number, since it uses as much as digits as its factorization.

102199397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746118.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 102199397 is about 10109.3717411123. The cubic root of 102199397 is about 467.5371348961.

The spelling of 102199397 in words is "one hundred two million, one hundred ninety-nine thousand, three hundred ninety-seven".