199380587 has 4 divisors (see below), whose sum is σ = 227863536. Its totient is φ = 170897640.

The previous prime is 199380557. The next prime is 199380589. The reversal of 199380587 is 785083991.

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 199380587 - 2⁸ = 199380331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199380589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14241464 + ... + 14241477.

It is an arithmetic number, because the mean of its divisors is an integer number (56965884).

Almost surely, 2^199380587 is an apocalyptic number.

199380587 is a deficient number, since it is larger than the sum of its proper divisors (28482949).

199380587 is an equidigital number, since it uses as much as digits as its factorization.

199380587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28482948.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 199380587 is about 14120.2190847026. The cubic root of 199380587 is about 584.1991984432.

The spelling of 199380587 in words is "one hundred ninety-nine million, three hundred eighty thousand, five hundred eighty-seven".