13648939 has 2 divisors, whose sum is σ = 13648940. Its totient is φ = 13648938.

The previous prime is 13648919. The next prime is 13648963. The reversal of 13648939 is 93984631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13648939 - 2¹³ = 13640747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13648895 and 13648904.

It is not a weakly prime, because it can be changed into another prime (13648919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6824469 + 6824470.

It is an arithmetic number, because the mean of its divisors is an integer number (6824470).

Almost surely, 2^13648939 is an apocalyptic number.

13648939 is a deficient number, since it is larger than the sum of its proper divisors (1).

13648939 is an equidigital number, since it uses as much as digits as its factorization.

13648939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 13648939 is about 3694.4470492890. The cubic root of 13648939 is about 238.9826087495.

The spelling of 13648939 in words is "thirteen million, six hundred forty-eight thousand, nine hundred thirty-nine".