199074839 has 8 divisors (see below), whose sum is σ = 205675008. Its totient is φ = 192485880.

The previous prime is 199074823. The next prime is 199074853. The reversal of 199074839 is 938470991.

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

It is a cyclic number.

It is not a de Polignac number, because 199074839 - 2⁴ = 199074823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199074739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48464 + ... + 52410.

It is an arithmetic number, because the mean of its divisors is an integer number (25709376).

Almost surely, 2^199074839 is an apocalyptic number.

199074839 is a deficient number, since it is larger than the sum of its proper divisors (6600169).

199074839 is a wasteful number, since it uses less digits than its factorization.

199074839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 199074839 is about 14109.3883283436. The cubic root of 199074839 is about 583.9004245925.

The spelling of 199074839 in words is "one hundred ninety-nine million, seventy-four thousand, eight hundred thirty-nine".