13446889 has 9 divisors (see below), whose sum is σ = 14265783. Its totient is φ = 12673152.

The previous prime is 13446883. The next prime is 13446899. The reversal of 13446889 is 98864431.

The square root of 13446889 is 3667.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3258025 + 10188864 = 1805^2 + 3192^2 .

It is not a de Polignac number, because 13446889 - 2¹³ = 13438697 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (13446883) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69577 + ... + 69769.

It is an arithmetic number, because the mean of its divisors is an integer number (1585087).

Almost surely, 2^13446889 is an apocalyptic number.

13446889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13446889 is the 3667-th square number.

13446889 is the 1834-th centered octagonal number.

It is an amenable number.

13446889 is a deficient number, since it is larger than the sum of its proper divisors (818894).

13446889 is an frugal number, since it uses more digits than its factorization.

13446889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 212 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The cubic root of 13446889 is about 237.7974938685.

The spelling of 13446889 in words is "thirteen million, four hundred forty-six thousand, eight hundred eighty-nine".