13421889 has 16 divisors (see below), whose sum is σ = 21414400. Its totient is φ = 8259408.

The previous prime is 13421887. The next prime is 13421897. The reversal of 13421889 is 98812431.

It is not a de Polignac number, because 13421889 - 2¹ = 13421887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13421887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18769 + ... + 19470.

It is an arithmetic number, because the mean of its divisors is an integer number (1338400).

Almost surely, 2^13421889 is an apocalyptic number.

It is an amenable number.

13421889 is a deficient number, since it is larger than the sum of its proper divisors (7992511).

13421889 is a wasteful number, since it uses less digits than its factorization.

13421889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38261 (or 38255 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 13421889 is about 3663.5896331331. The cubic root of 13421889 is about 237.6500341013.

The spelling of 13421889 in words is "thirteen million, four hundred twenty-one thousand, eight hundred eighty-nine".