13870069 has 2 divisors, whose sum is σ = 13870070. Its totient is φ = 13870068.

The previous prime is 13870067. The next prime is 13870099. The reversal of 13870069 is 96007831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8625969 + 5244100 = 2937^2 + 2290^2 .

It is a cyclic number.

It is not a de Polignac number, because 13870069 - 2¹ = 13870067 is a prime.

It is a super-2 number, since 2×13870069² = 384757628129522, which contains 22 as substring.

Together with 13870067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13870061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6935034 + 6935035.

It is an arithmetic number, because the mean of its divisors is an integer number (6935035).

Almost surely, 2^13870069 is an apocalyptic number.

It is an amenable number.

13870069 is a deficient number, since it is larger than the sum of its proper divisors (1).

13870069 is an equidigital number, since it uses as much as digits as its factorization.

13870069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 13870069 is about 3724.2541535185. The cubic root of 13870069 is about 240.2663074015.

It can be divided in two parts, 138 and 70069, that added together give a palindrome (70207).

The spelling of 13870069 in words is "thirteen million, eight hundred seventy thousand, sixty-nine".