13869811 has 2 divisors, whose sum is σ = 13869812. Its totient is φ = 13869810.

The previous prime is 13869809. The next prime is 13869827. The reversal of 13869811 is 11896831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13869811 - 2¹ = 13869809 is a prime.

Together with 13869809, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13809811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6934905 + 6934906.

It is an arithmetic number, because the mean of its divisors is an integer number (6934906).

Almost surely, 2^13869811 is an apocalyptic number.

13869811 is a deficient number, since it is larger than the sum of its proper divisors (1).

13869811 is an equidigital number, since it uses as much as digits as its factorization.

13869811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 37.

The square root of 13869811 is about 3724.2195155495. The cubic root of 13869811 is about 240.2648176446.

The spelling of 13869811 in words is "thirteen million, eight hundred sixty-nine thousand, eight hundred eleven".