199994434 has 8 divisors (see below), whose sum is σ = 300051900. Its totient is φ = 99977136.

The previous prime is 199994429. The next prime is 199994461. The reversal of 199994434 is 434499991.

It can be written as a sum of positive squares in 2 ways, for example, as 197262025 + 2732409 = 14045^2 + 1653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12792 + ... + 23740.

Almost surely, 2^199994434 is an apocalyptic number.

199994434 is a deficient number, since it is larger than the sum of its proper divisors (100057466).

199994434 is a wasteful number, since it uses less digits than its factorization.

199994434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20084.

The product of its digits is 1259712, while the sum is 52.

The square root of 199994434 is about 14141.9388345446. The cubic root of 199994434 is about 584.7981225647.

The spelling of 199994434 in words is "one hundred ninety-nine million, nine hundred ninety-four thousand, four hundred thirty-four".