16849849 has 2 divisors, whose sum is σ = 16849850. Its totient is φ = 16849848.

The previous prime is 16849843. The next prime is 16849867. The reversal of 16849849 is 94894861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 4981824 = 3445^2 + 2232^2 .

It is a cyclic number.

It is not a de Polignac number, because 16849849 - 2¹¹ = 16847801 is a prime.

It is a super-2 number, since 2×16849849² = 567834822645602, which contains 22 as substring.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (16849843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8424924 + 8424925.

It is an arithmetic number, because the mean of its divisors is an integer number (8424925).

Almost surely, 2^16849849 is an apocalyptic number.

It is an amenable number.

16849849 is a deficient number, since it is larger than the sum of its proper divisors (1).

16849849 is an equidigital number, since it uses as much as digits as its factorization.

16849849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 49.

The square root of 16849849 is about 4104.8567575495. The cubic root of 16849849 is about 256.3688986997.

The spelling of 16849849 in words is "sixteen million, eight hundred forty-nine thousand, eight hundred forty-nine".