13390209 has 24 divisors (see below), whose sum is σ = 23068032. Its totient is φ = 7318080.

The previous prime is 13390207. The next prime is 13390211. The reversal of 13390209 is 90209331.

13390209 = T₁₁₂ + T₁₁₃ + ... + T₄₃₃.

It is an interprime number because it is at equal distance from previous prime (13390207) and next prime (13390211).

It is not a de Polignac number, because 13390209 - 2¹ = 13390207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13390207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3172 + ... + 6069.

It is an arithmetic number, because the mean of its divisors is an integer number (961168).

Almost surely, 2^13390209 is an apocalyptic number.

It is an amenable number.

13390209 is a deficient number, since it is larger than the sum of its proper divisors (9677823).

13390209 is a wasteful number, since it uses less digits than its factorization.

13390209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9277 (or 9274 counting only the distinct ones).

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

The square root of 13390209 is about 3659.2634504774. The cubic root of 13390209 is about 237.4629098128.

The spelling of 13390209 in words is "thirteen million, three hundred ninety thousand, two hundred nine".