16199449 has 12 divisors (see below), whose sum is σ = 18929700. Its totient is φ = 13822368.

The previous prime is 16199441. The next prime is 16199459. The reversal of 16199449 is 94499161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9272025 + 6927424 = 3045^2 + 2632^2 .

It is not a de Polignac number, because 16199449 - 2³ = 16199441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16199441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12567 + ... + 13795.

It is an arithmetic number, because the mean of its divisors is an integer number (1577475).

Almost surely, 2^16199449 is an apocalyptic number.

It is an amenable number.

16199449 is a deficient number, since it is larger than the sum of its proper divisors (2730251).

16199449 is a wasteful number, since it uses less digits than its factorization.

16199449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1505 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 16199449 is about 4024.8539103923. The cubic root of 16199449 is about 253.0269308457.

The spelling of 16199449 in words is "sixteen million, one hundred ninety-nine thousand, four hundred forty-nine".