199869616 has 10 divisors (see below), whose sum is σ = 387247412. Its totient is φ = 99934800.

The previous prime is 199869613. The next prime is 199869619. The reversal of 199869616 is 616968991.

199869616 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 (199869613) and next prime (199869619).

It is not an unprimeable number, because it can be changed into a prime (199869613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6245910 + ... + 6245941.

Almost surely, 2^199869616 is an apocalyptic number.

199869616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

199869616 is a deficient number, since it is larger than the sum of its proper divisors (187377796).

199869616 is a wasteful number, since it uses less digits than its factorization.

199869616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12491859 (or 12491853 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 55.

The square root of 199869616 is about 14137.5251016576. The cubic root of 199869616 is about 584.6764383073.

The spelling of 199869616 in words is "one hundred ninety-nine million, eight hundred sixty-nine thousand, six hundred sixteen".