13947877 has 2 divisors, whose sum is σ = 13947878. Its totient is φ = 13947876.

The previous prime is 13947863. The next prime is 13947883. The reversal of 13947877 is 77874931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13905441 + 42436 = 3729^2 + 206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13947877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13947827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6973938 + 6973939.

It is an arithmetic number, because the mean of its divisors is an integer number (6973939).

Almost surely, 2^13947877 is an apocalyptic number.

It is an amenable number.

13947877 is a deficient number, since it is larger than the sum of its proper divisors (1).

13947877 is an equidigital number, since it uses as much as digits as its factorization.

13947877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 46.

The square root of 13947877 is about 3734.6856628102. The cubic root of 13947877 is about 240.7147500587.

The spelling of 13947877 in words is "thirteen million, nine hundred forty-seven thousand, eight hundred seventy-seven".