16994449 has 2 divisors, whose sum is σ = 16994450. Its totient is φ = 16994448.

The previous prime is 16994437. The next prime is 16994491. The reversal of 16994449 is 94449961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9042049 + 7952400 = 3007^2 + 2820^2 .

It is a cyclic number.

It is not a de Polignac number, because 16994449 - 2⁹ = 16993937 is a prime.

It is a super-2 number, since 2×16994449² = 577622593627202, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16994399 and 16994408.

It is not a weakly prime, because it can be changed into another prime (16994429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8497224 + 8497225.

It is an arithmetic number, because the mean of its divisors is an integer number (8497225).

Almost surely, 2^16994449 is an apocalyptic number.

It is an amenable number.

16994449 is a deficient number, since it is larger than the sum of its proper divisors (1).

16994449 is an equidigital number, since it uses as much as digits as its factorization.

16994449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 46.

The square root of 16994449 is about 4122.4324130300. The cubic root of 16994449 is about 257.1001693836.

The spelling of 16994449 in words is "sixteen million, nine hundred ninety-four thousand, four hundred forty-nine".