16199749 has 2 divisors, whose sum is σ = 16199750. Its totient is φ = 16199748.

The previous prime is 16199713. The next prime is 16199753. The reversal of 16199749 is 94799161.

16199749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16120225 + 79524 = 4015^2 + 282^2 .

It is an emirp because it is prime and its reverse (94799161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16199749 - 2⁷ = 16199621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16199699 and 16199708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16199549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8099874 + 8099875.

It is an arithmetic number, because the mean of its divisors is an integer number (8099875).

Almost surely, 2^16199749 is an apocalyptic number.

It is an amenable number.

16199749 is a deficient number, since it is larger than the sum of its proper divisors (1).

16199749 is an equidigital number, since it uses as much as digits as its factorization.

16199749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 46.

The square root of 16199749 is about 4024.8911786532. The cubic root of 16199749 is about 253.0284927838.

The spelling of 16199749 in words is "sixteen million, one hundred ninety-nine thousand, seven hundred forty-nine".