13853999 has 2 divisors, whose sum is σ = 13854000. Its totient is φ = 13853998.

The previous prime is 13853977. The next prime is 13854011. The reversal of 13853999 is 99935831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13853999 - 2⁸ = 13853743 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13853599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6926999 + 6927000.

It is an arithmetic number, because the mean of its divisors is an integer number (6927000).

Almost surely, 2^13853999 is an apocalyptic number.

13853999 is a deficient number, since it is larger than the sum of its proper divisors (1).

13853999 is an equidigital number, since it uses as much as digits as its factorization.

13853999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 47.

The square root of 13853999 is about 3722.0960492712. The cubic root of 13853999 is about 240.1734798969.

The spelling of 13853999 in words is "thirteen million, eight hundred fifty-three thousand, nine hundred ninety-nine".