1339281 has 8 divisors (see below), whose sum is σ = 1984160. Its totient is φ = 892836.

The previous prime is 1339259. The next prime is 1339297. The reversal of 1339281 is 1829331.

It is not a de Polignac number, because 1339281 - 2⁷ = 1339153 is a prime.

It is a super-2 number, since 2×1339281² = 3587347193922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 49603 = 1339281 / (1 + 3 + 3 + 9 + 2 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1339211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24775 + ... + 24828.

It is an arithmetic number, because the mean of its divisors is an integer number (248020).

2^1339281 is an apocalyptic number.

It is an amenable number.

1339281 is a deficient number, since it is larger than the sum of its proper divisors (644879).

1339281 is an equidigital number, since it uses as much as digits as its factorization.

1339281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49612 (or 49606 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1339281 is about 1157.2730879097. The cubic root of 1339281 is about 110.2276552430.

The spelling of 1339281 in words is "one million, three hundred thirty-nine thousand, two hundred eighty-one".