199614973 has 4 divisors (see below), whose sum is σ = 199646208. Its totient is φ = 199583740.

The previous prime is 199614971. The next prime is 199614977. The reversal of 199614973 is 379416991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 379416991 = 823 ⋅461017.

It is a cyclic number.

It is not a de Polignac number, because 199614973 - 2¹ = 199614971 is a prime.

It is a super-2 number, since 2×199614973² = 79692274891581458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199614971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173 + ... + 20098.

It is an arithmetic number, because the mean of its divisors is an integer number (49911552).

Almost surely, 2^199614973 is an apocalyptic number.

It is an amenable number.

199614973 is a deficient number, since it is larger than the sum of its proper divisors (31235).

199614973 is an equidigital number, since it uses as much as digits as its factorization.

199614973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31234.

The product of its digits is 367416, while the sum is 49.

The square root of 199614973 is about 14128.5163056848. The cubic root of 199614973 is about 584.4280313069.

The spelling of 199614973 in words is "one hundred ninety-nine million, six hundred fourteen thousand, nine hundred seventy-three".