13882021 has 2 divisors, whose sum is σ = 13882022. Its totient is φ = 13882020.

The previous prime is 13882019. The next prime is 13882049. The reversal of 13882021 is 12028831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7049025 + 6832996 = 2655^2 + 2614^2 .

It is a cyclic number.

It is not a de Polignac number, because 13882021 - 2¹ = 13882019 is a prime.

Together with 13882019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13882091) 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, 6941010 + 6941011.

It is an arithmetic number, because the mean of its divisors is an integer number (6941011).

Almost surely, 2^13882021 is an apocalyptic number.

It is an amenable number.

13882021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13882021 is an equidigital number, since it uses as much as digits as its factorization.

13882021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 13882021 is about 3725.8584245782. The cubic root of 13882021 is about 240.3353010129.

The spelling of 13882021 in words is "thirteen million, eight hundred eighty-two thousand, twenty-one".