16409249 has 2 divisors, whose sum is σ = 16409250. Its totient is φ = 16409248.

The previous prime is 16409227. The next prime is 16409287. The reversal of 16409249 is 94290461.

16409249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15745024 + 664225 = 3968^2 + 815^2 .

It is an emirp because it is prime and its reverse (94290461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16409249 - 2⁸ = 16408993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16409299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8204624 + 8204625.

It is an arithmetic number, because the mean of its divisors is an integer number (8204625).

Almost surely, 2^16409249 is an apocalyptic number.

It is an amenable number.

16409249 is a deficient number, since it is larger than the sum of its proper divisors (1).

16409249 is an equidigital number, since it uses as much as digits as its factorization.

16409249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 16409249 is about 4050.8331241857. The cubic root of 16409249 is about 254.1145710422.

The spelling of 16409249 in words is "sixteen million, four hundred nine thousand, two hundred forty-nine".