1439261 has 2 divisors, whose sum is σ = 1439262. Its totient is φ = 1439260.

The previous prime is 1439239. The next prime is 1439267. The reversal of 1439261 is 1629341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1428025 + 11236 = 1195^2 + 106^2 .

It is a cyclic number.

It is not a de Polignac number, because 1439261 - 2¹⁰ = 1438237 is a prime.

It is a super-2 number, since 2×1439261² = 4142944452242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1439261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1439267) 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, 719630 + 719631.

It is an arithmetic number, because the mean of its divisors is an integer number (719631).

2^1439261 is an apocalyptic number.

It is an amenable number.

1439261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1439261 is an equidigital number, since it uses as much as digits as its factorization.

1439261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 1439261 is about 1199.6920438179. The cubic root of 1439261 is about 112.9050027818.

The spelling of 1439261 in words is "one million, four hundred thirty-nine thousand, two hundred sixty-one".