13771973 has 2 divisors, whose sum is σ = 13771974. Its totient is φ = 13771972.

The previous prime is 13771943. The next prime is 13771999. The reversal of 13771973 is 37917731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10452289 + 3319684 = 3233^2 + 1822^2 .

It is a cyclic number.

It is not a de Polignac number, because 13771973 - 2¹⁴ = 13755589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13771913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6885986 + 6885987.

It is an arithmetic number, because the mean of its divisors is an integer number (6885987).

Almost surely, 2^13771973 is an apocalyptic number.

It is an amenable number.

13771973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13771973 is an equidigital number, since it uses as much as digits as its factorization.

13771973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27783, while the sum is 38.

The square root of 13771973 is about 3711.0608995272. The cubic root of 13771973 is about 239.6985393220.

The spelling of 13771973 in words is "thirteen million, seven hundred seventy-one thousand, nine hundred seventy-three".