13977401 has 2 divisors, whose sum is σ = 13977402. Its totient is φ = 13977400.

The previous prime is 13977371. The next prime is 13977419. The reversal of 13977401 is 10477931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9461776 + 4515625 = 3076^2 + 2125^2 .

It is an emirp because it is prime and its reverse (10477931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13977401 - 2¹⁸ = 13715257 is a prime.

It is not a weakly prime, because it can be changed into another prime (13977461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6988700 + 6988701.

It is an arithmetic number, because the mean of its divisors is an integer number (6988701).

Almost surely, 2^13977401 is an apocalyptic number.

It is an amenable number.

13977401 is a deficient number, since it is larger than the sum of its proper divisors (1).

13977401 is an equidigital number, since it uses as much as digits as its factorization.

13977401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 13977401 is about 3738.6362486875. The cubic root of 13977401 is about 240.8844737071.

The spelling of 13977401 in words is "thirteen million, nine hundred seventy-seven thousand, four hundred one".