13869799 has 2 divisors, whose sum is σ = 13869800. Its totient is φ = 13869798.

The previous prime is 13869769. The next prime is 13869809. The reversal of 13869799 is 99796831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13869799 - 2¹³ = 13861607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13869719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6934899 + 6934900.

It is an arithmetic number, because the mean of its divisors is an integer number (6934900).

Almost surely, 2^13869799 is an apocalyptic number.

13869799 is a deficient number, since it is larger than the sum of its proper divisors (1).

13869799 is an equidigital number, since it uses as much as digits as its factorization.

13869799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 52.

The square root of 13869799 is about 3724.2179044734. The cubic root of 13869799 is about 240.2647483532.

The spelling of 13869799 in words is "thirteen million, eight hundred sixty-nine thousand, seven hundred ninety-nine".