16427249 has 2 divisors, whose sum is σ = 16427250. Its totient is φ = 16427248.

The previous prime is 16427237. The next prime is 16427273. The reversal of 16427249 is 94272461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10336225 + 6091024 = 3215^2 + 2468^2 .

It is an emirp because it is prime and its reverse (94272461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16427249 - 2⁴ = 16427233 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16427209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8213624 + 8213625.

It is an arithmetic number, because the mean of its divisors is an integer number (8213625).

Almost surely, 2^16427249 is an apocalyptic number.

It is an amenable number.

16427249 is a deficient number, since it is larger than the sum of its proper divisors (1).

16427249 is an equidigital number, since it uses as much as digits as its factorization.

16427249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 16427249 is about 4053.0542804162. The cubic root of 16427249 is about 254.2074534324.

The spelling of 16427249 in words is "sixteen million, four hundred twenty-seven thousand, two hundred forty-nine".