16828949 has 2 divisors, whose sum is σ = 16828950. Its totient is φ = 16828948.

The previous prime is 16828937. The next prime is 16828957. The reversal of 16828949 is 94982861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14326225 + 2502724 = 3785^2 + 1582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16828949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16828549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8414474 + 8414475.

It is an arithmetic number, because the mean of its divisors is an integer number (8414475).

Almost surely, 2^16828949 is an apocalyptic number.

It is an amenable number.

16828949 is a deficient number, since it is larger than the sum of its proper divisors (1).

16828949 is an equidigital number, since it uses as much as digits as its factorization.

16828949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 47.

The square root of 16828949 is about 4102.3102028004. The cubic root of 16828949 is about 256.2628576535.

The spelling of 16828949 in words is "sixteen million, eight hundred twenty-eight thousand, nine hundred forty-nine".