13021289 has 16 divisors (see below), whose sum is σ = 14515200. Its totient is φ = 11624976.

The previous prime is 13021277. The next prime is 13021331. The reversal of 13021289 is 98212031.

It is a cyclic number.

It is not a de Polignac number, because 13021289 - 2⁴ = 13021273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13021219) 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, 36092 + ... + 36450.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^13021289 is an apocalyptic number.

13021289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13021289 is a deficient number, since it is larger than the sum of its proper divisors (1493911).

13021289 is a wasteful number, since it uses less digits than its factorization.

13021289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 13021289 is about 3608.5023209082. The cubic root of 13021289 is about 235.2617515002.

The spelling of 13021289 in words is "thirteen million, twenty-one thousand, two hundred eighty-nine".