1539449 has 2 divisors, whose sum is σ = 1539450. Its totient is φ = 1539448.

The previous prime is 1539403. The next prime is 1539451. The reversal of 1539449 is 9449351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1537600 + 1849 = 1240^2 + 43^2 .

It is an emirp because it is prime and its reverse (9449351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1539449 - 2⁸ = 1539193 is a prime.

It is a Sophie Germain prime.

Together with 1539451, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1539479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769724 + 769725.

It is an arithmetic number, because the mean of its divisors is an integer number (769725).

2^1539449 is an apocalyptic number.

It is an amenable number.

1539449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1539449 is an equidigital number, since it uses as much as digits as its factorization.

1539449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 35.

The square root of 1539449 is about 1240.7453405111. The cubic root of 1539449 is about 115.4662607674.

The spelling of 1539449 in words is "one million, five hundred thirty-nine thousand, four hundred forty-nine".