1539149 has 2 divisors, whose sum is σ = 1539150. Its totient is φ = 1539148.

The previous prime is 1539127. The next prime is 1539193. The reversal of 1539149 is 9419351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1525225 + 13924 = 1235^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 1539149 - 2⁸ = 1538893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1539199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769574 + 769575.

It is an arithmetic number, because the mean of its divisors is an integer number (769575).

2^1539149 is an apocalyptic number.

It is an amenable number.

1539149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1539149 is an equidigital number, since it uses as much as digits as its factorization.

1539149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 32.

The square root of 1539149 is about 1240.6244395465. The cubic root of 1539149 is about 115.4587597873.

The spelling of 1539149 in words is "one million, five hundred thirty-nine thousand, one hundred forty-nine".