13771489 has 2 divisors, whose sum is σ = 13771490. Its totient is φ = 13771488.

The previous prime is 13771477. The next prime is 13771519. The reversal of 13771489 is 98417731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13630864 + 140625 = 3692^2 + 375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13771489 is a prime.

It is equal to p₈₉₆₁₇₉ and since 13771489 and 896179 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13774489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6885744 + 6885745.

It is an arithmetic number, because the mean of its divisors is an integer number (6885745).

Almost surely, 2^13771489 is an apocalyptic number.

It is an amenable number.

13771489 is a deficient number, since it is larger than the sum of its proper divisors (1).

13771489 is an equidigital number, since it uses as much as digits as its factorization.

13771489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 13771489 is about 3710.9956884912. The cubic root of 13771489 is about 239.6957313135.

The spelling of 13771489 in words is "thirteen million, seven hundred seventy-one thousand, four hundred eighty-nine".