1339669 has 2 divisors, whose sum is σ = 1339670. Its totient is φ = 1339668.

The previous prime is 1339661. The next prime is 1339673. The reversal of 1339669 is 9669331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1102500 + 237169 = 1050^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 1339669 - 2³ = 1339661 is a prime.

It is a super-2 number, since 2×1339669² = 3589426059122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1339661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669834 + 669835.

It is an arithmetic number, because the mean of its divisors is an integer number (669835).

2^1339669 is an apocalyptic number.

It is an amenable number.

1339669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339669 is an equidigital number, since it uses as much as digits as its factorization.

1339669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 37.

The square root of 1339669 is about 1157.4407112246. The cubic root of 1339669 is about 110.2382988149.

It can be divided in two parts, 1339 and 669, that multiplied together give a triangular number (895791 = T₁₃₃₈).

The spelling of 1339669 in words is "one million, three hundred thirty-nine thousand, six hundred sixty-nine".