15941449 has 2 divisors, whose sum is σ = 15941450. Its totient is φ = 15941448.

The previous prime is 15941423. The next prime is 15941473. The reversal of 15941449 is 94414951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15405625 + 535824 = 3925^2 + 732^2 .

It is an emirp because it is prime and its reverse (94414951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15941449 - 2¹³ = 15933257 is a prime.

It is not a weakly prime, because it can be changed into another prime (15041449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7970724 + 7970725.

It is an arithmetic number, because the mean of its divisors is an integer number (7970725).

Almost surely, 2^15941449 is an apocalyptic number.

It is an amenable number.

15941449 is a deficient number, since it is larger than the sum of its proper divisors (1).

15941449 is an equidigital number, since it uses as much as digits as its factorization.

15941449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 15941449 is about 3992.6744169792. The cubic root of 15941449 is about 251.6764607877.

The spelling of 15941449 in words is "fifteen million, nine hundred forty-one thousand, four hundred forty-nine".