16949239 has 2 divisors, whose sum is σ = 16949240. Its totient is φ = 16949238.

The previous prime is 16949237. The next prime is 16949269. The reversal of 16949239 is 93294961.

It is a weak prime.

It is an emirp because it is prime and its reverse (93294961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16949239 - 2¹ = 16949237 is a prime.

Together with 16949237, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16949195 and 16949204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16949237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8474619 + 8474620.

It is an arithmetic number, because the mean of its divisors is an integer number (8474620).

Almost surely, 2^16949239 is an apocalyptic number.

16949239 is a deficient number, since it is larger than the sum of its proper divisors (1).

16949239 is an equidigital number, since it uses as much as digits as its factorization.

16949239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 43.

The square root of 16949239 is about 4116.9453481920. The cubic root of 16949239 is about 256.8719807326.

The spelling of 16949239 in words is "sixteen million, nine hundred forty-nine thousand, two hundred thirty-nine".