1308839069 has 2 divisors, whose sum is σ = 1308839070. Its totient is φ = 1308839068.

The previous prime is 1308839053. The next prime is 1308839071. The reversal of 1308839069 is 9609388031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1102572025 + 206267044 = 33205^2 + 14362^2 .

It is a cyclic number.

It is not a de Polignac number, because 1308839069 - 2⁴ = 1308839053 is a prime.

It is a super-2 number, since 2×1308839069² = 3426119417081573522, which contains 22 as substring.

Together with 1308839071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1308839009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654419534 + 654419535.

It is an arithmetic number, because the mean of its divisors is an integer number (654419535).

Almost surely, 2^1308839069 is an apocalyptic number.

It is an amenable number.

1308839069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308839069 is an equidigital number, since it uses as much as digits as its factorization.

1308839069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 1308839069 is about 36177.8809357320. The cubic root of 1308839069 is about 1093.8608613223.

The spelling of 1308839069 in words is "one billion, three hundred eight million, eight hundred thirty-nine thousand, sixty-nine".