199990016 has 18 divisors (see below), whose sum is σ = 399199332. Its totient is φ = 99994880.

The previous prime is 199990013. The next prime is 199990019. The reversal of 199990016 is 610099991.

It is a happy number.

199990016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (199990013) and next prime (199990019).

It is not an unprimeable number, because it can be changed into a prime (199990013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390350 + ... + 390861.

Almost surely, 2^199990016 is an apocalyptic number.

199990016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

199990016 is a deficient number, since it is larger than the sum of its proper divisors (199209316).

199990016 is an frugal number, since it uses more digits than its factorization.

199990016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781227 (or 781213 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 44.

The square root of 199990016 is about 14141.7826316204. The cubic root of 199990016 is about 584.7938163496.

The spelling of 199990016 in words is "one hundred ninety-nine million, nine hundred ninety thousand, sixteen".