199939046 has 32 divisors (see below), whose sum is σ = 325693440. Its totient is φ = 91799136.

The previous prime is 199939039. The next prime is 199939063. The reversal of 199939046 is 640939991.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 199938985 and 199939003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133715 + ... + 135201.

It is an arithmetic number, because the mean of its divisors is an integer number (10177920).

Almost surely, 2^199939046 is an apocalyptic number.

199939046 is a deficient number, since it is larger than the sum of its proper divisors (125754394).

199939046 is a wasteful number, since it uses less digits than its factorization.

199939046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628.

The product of its (nonzero) digits is 472392, while the sum is 50.

The square root of 199939046 is about 14139.9804101703. The cubic root of 199939046 is about 584.7441314137.

The spelling of 199939046 in words is "one hundred ninety-nine million, nine hundred thirty-nine thousand, forty-six".