13209390 has 48 divisors (see below), whose sum is σ = 34527168. Its totient is φ = 3503808.

The previous prime is 13209359. The next prime is 13209401. The reversal of 13209390 is 9390231.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 28299 + ... + 28761.

It is an arithmetic number, because the mean of its divisors is an integer number (719316).

Almost surely, 2^13209390 is an apocalyptic number.

13209390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13209390 is an abundant number, since it is smaller than the sum of its proper divisors (21317778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13209390 is a wasteful number, since it uses less digits than its factorization.

13209390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 13209390 is about 3634.4724514020. The cubic root of 13209390 is about 236.3891764136.

The spelling of 13209390 in words is "thirteen million, two hundred nine thousand, three hundred ninety".