199341797939 has 16 divisors (see below), whose sum is σ = 208928160000. Its totient is φ = 189833910816.

The previous prime is 199341797933. The next prime is 199341797971. The reversal of 199341797939 is 939797143991.

It is a cyclic number.

It is not a de Polignac number, because 199341797939 - 2⁴ = 199341797923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199341797933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4788137 + ... + 4829589.

It is an arithmetic number, because the mean of its divisors is an integer number (13058010000).

Almost surely, 2^199341797939 is an apocalyptic number.

199341797939 is a deficient number, since it is larger than the sum of its proper divisors (9586362061).

199341797939 is a wasteful number, since it uses less digits than its factorization.

199341797939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42394.

The product of its digits is 104162436, while the sum is 71.

The spelling of 199341797939 in words is "one hundred ninety-nine billion, three hundred forty-one million, seven hundred ninety-seven thousand, nine hundred thirty-nine".