13860449 has 2 divisors, whose sum is σ = 13860450. Its totient is φ = 13860448.

The previous prime is 13860391. The next prime is 13860493. The reversal of 13860449 is 94406831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12496225 + 1364224 = 3535^2 + 1168^2 .

It is a cyclic number.

It is not a de Polignac number, because 13860449 - 2²⁰ = 12811873 is a prime.

It is a super-2 number, since 2×13860449² = 384224092963202, which contains 22 as substring.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (13860349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6930224 + 6930225.

It is an arithmetic number, because the mean of its divisors is an integer number (6930225).

Almost surely, 2^13860449 is an apocalyptic number.

It is an amenable number.

13860449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13860449 is an equidigital number, since it uses as much as digits as its factorization.

13860449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 13860449 is about 3722.9623957274. The cubic root of 13860449 is about 240.2107465999.

The spelling of 13860449 in words is "thirteen million, eight hundred sixty thousand, four hundred forty-nine".