199374429 has 16 divisors (see below), whose sum is σ = 280878080. Its totient is φ = 125446320.

The previous prime is 199374403. The next prime is 199374443. The reversal of 199374429 is 924473991.

It is a happy number.

It is not a de Polignac number, because 199374429 - 2⁵ = 199374397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199374029) 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, 8994 + ... + 21900.

It is an arithmetic number, because the mean of its divisors is an integer number (17554880).

Almost surely, 2^199374429 is an apocalyptic number.

199374429 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

199374429 is a deficient number, since it is larger than the sum of its proper divisors (81503651).

199374429 is a wasteful number, since it uses less digits than its factorization.

199374429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13200.

The product of its digits is 489888, while the sum is 48.

The square root of 199374429 is about 14120.0010269121. The cubic root of 199374429 is about 584.1931839230.

The spelling of 199374429 in words is "one hundred ninety-nine million, three hundred seventy-four thousand, four hundred twenty-nine".