16968449 has 4 divisors (see below), whose sum is σ = 17001540. Its totient is φ = 16935360.

The previous prime is 16968443. The next prime is 16968461. The reversal of 16968449 is 94486961.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11950849 + 5017600 = 3457^2 + 2240^2 .

It is a cyclic number.

It is not a de Polignac number, because 16968449 - 2⁴ = 16968433 is a prime.

It is a super-2 number, since 2×16968449² = 575856522931202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16968443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15764 + ... + 16805.

It is an arithmetic number, because the mean of its divisors is an integer number (4250385).

Almost surely, 2^16968449 is an apocalyptic number.

It is an amenable number.

16968449 is a deficient number, since it is larger than the sum of its proper divisors (33091).

16968449 is an equidigital number, since it uses as much as digits as its factorization.

16968449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33090.

The product of its digits is 373248, while the sum is 47.

The square root of 16968449 is about 4119.2777279518. The cubic root of 16968449 is about 256.9689889757.

The spelling of 16968449 in words is "sixteen million, nine hundred sixty-eight thousand, four hundred forty-nine".