16849139 has 2 divisors, whose sum is σ = 16849140. Its totient is φ = 16849138.

The previous prime is 16849127. The next prime is 16849141. The reversal of 16849139 is 93194861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16849139 is a prime.

It is a Sophie Germain prime.

Together with 16849141, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16849096 and 16849105.

It is not a weakly prime, because it can be changed into another prime (16849439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8424569 + 8424570.

It is an arithmetic number, because the mean of its divisors is an integer number (8424570).

Almost surely, 2^16849139 is an apocalyptic number.

16849139 is a deficient number, since it is larger than the sum of its proper divisors (1).

16849139 is an equidigital number, since it uses as much as digits as its factorization.

16849139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 41.

The square root of 16849139 is about 4104.7702737181. The cubic root of 16849139 is about 256.3652977876.

The spelling of 16849139 in words is "sixteen million, eight hundred forty-nine thousand, one hundred thirty-nine".