16803949 has 2 divisors, whose sum is σ = 16803950. Its totient is φ = 16803948.

The previous prime is 16803947. The next prime is 16803977. The reversal of 16803949 is 94930861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15132100 + 1671849 = 3890^2 + 1293^2 .

It is an emirp because it is prime and its reverse (94930861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16803949 - 2¹ = 16803947 is a prime.

Together with 16803947, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16803947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8401974 + 8401975.

It is an arithmetic number, because the mean of its divisors is an integer number (8401975).

Almost surely, 2^16803949 is an apocalyptic number.

It is an amenable number.

16803949 is a deficient number, since it is larger than the sum of its proper divisors (1).

16803949 is an equidigital number, since it uses as much as digits as its factorization.

16803949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 16803949 is about 4099.2620067519. The cubic root of 16803949 is about 256.1358989139.

The spelling of 16803949 in words is "sixteen million, eight hundred three thousand, nine hundred forty-nine".