13777441 has 2 divisors, whose sum is σ = 13777442. Its totient is φ = 13777440.

The previous prime is 13777433. The next prime is 13777453. The reversal of 13777441 is 14477731.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8579041 + 5198400 = 2929^2 + 2280^2 .

It is a cyclic number.

It is not a de Polignac number, because 13777441 - 2³ = 13777433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13777397 and 13777406.

It is not a weakly prime, because it can be changed into another prime (13777741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6888720 + 6888721.

It is an arithmetic number, because the mean of its divisors is an integer number (6888721).

Almost surely, 2^13777441 is an apocalyptic number.

It is an amenable number.

13777441 is a deficient number, since it is larger than the sum of its proper divisors (1).

13777441 is an equidigital number, since it uses as much as digits as its factorization.

13777441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16464, while the sum is 34.

The square root of 13777441 is about 3711.7975429703. The cubic root of 13777441 is about 239.7302582870.

The spelling of 13777441 in words is "thirteen million, seven hundred seventy-seven thousand, four hundred forty-one".