16394249 has 2 divisors, whose sum is σ = 16394250. Its totient is φ = 16394248.

The previous prime is 16394237. The next prime is 16394263. The reversal of 16394249 is 94249361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16345849 + 48400 = 4043^2 + 220^2 .

It is an emirp because it is prime and its reverse (94249361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16394249 - 2⁴ = 16394233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16394269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8197124 + 8197125.

It is an arithmetic number, because the mean of its divisors is an integer number (8197125).

Almost surely, 2^16394249 is an apocalyptic number.

It is an amenable number.

16394249 is a deficient number, since it is larger than the sum of its proper divisors (1).

16394249 is an equidigital number, since it uses as much as digits as its factorization.

16394249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 16394249 is about 4048.9812298898. The cubic root of 16394249 is about 254.0371171500.

The spelling of 16394249 in words is "sixteen million, three hundred ninety-four thousand, two hundred forty-nine".