199940419 has 4 divisors (see below), whose sum is σ = 228503344. Its totient is φ = 171377496.

The previous prime is 199940393. The next prime is 199940423. The reversal of 199940419 is 914049991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 914049991 = 8081 ⋅113111.

It is a cyclic number.

It is not a de Polignac number, because 199940419 - 2⁵ = 199940387 is a prime.

It is a super-2 number, since 2×199940419² = 79952342299791122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199940479) 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, 14281452 + ... + 14281465.

It is an arithmetic number, because the mean of its divisors is an integer number (57125836).

Almost surely, 2^199940419 is an apocalyptic number.

199940419 is a deficient number, since it is larger than the sum of its proper divisors (28562925).

199940419 is an equidigital number, since it uses as much as digits as its factorization.

199940419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28562924.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 199940419 is about 14140.0289603664. The cubic root of 199940419 is about 584.7454699080.

The spelling of 199940419 in words is "one hundred ninety-nine million, nine hundred forty thousand, four hundred nineteen".