13894949 has 2 divisors, whose sum is σ = 13894950. Its totient is φ = 13894948.

The previous prime is 13894931. The next prime is 13894961. The reversal of 13894949 is 94949831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9302500 + 4592449 = 3050^2 + 2143^2 .

It is an emirp because it is prime and its reverse (94949831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13894949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13894999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6947474 + 6947475.

It is an arithmetic number, because the mean of its divisors is an integer number (6947475).

Almost surely, 2^13894949 is an apocalyptic number.

It is an amenable number.

13894949 is a deficient number, since it is larger than the sum of its proper divisors (1).

13894949 is an equidigital number, since it uses as much as digits as its factorization.

13894949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 47.

The square root of 13894949 is about 3727.5929230537. The cubic root of 13894949 is about 240.4098840716.

The spelling of 13894949 in words is "thirteen million, eight hundred ninety-four thousand, nine hundred forty-nine".