13434309 has 16 divisors (see below), whose sum is σ = 22746240. Its totient is φ = 7676640.

The previous prime is 13434307. The next prime is 13434331. The reversal of 13434309 is 90343431.

13434309 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13434309 - 2¹ = 13434307 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13434307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35352 + ... + 35729.

It is an arithmetic number, because the mean of its divisors is an integer number (1421640).

Almost surely, 2^13434309 is an apocalyptic number.

It is an amenable number.

13434309 is a deficient number, since it is larger than the sum of its proper divisors (9311931).

13434309 is an equidigital number, since it uses as much as digits as its factorization.

13434309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71097 (or 71091 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 13434309 is about 3665.2843000237. The cubic root of 13434309 is about 237.7233149801.

Adding to 13434309 its sum of digits (27), we get a triangular number (13434336 = T₅₁₈₃).

It can be divided in two parts, 134 and 34309, that added together give a palindrome (34443).

The spelling of 13434309 in words is "thirteen million, four hundred thirty-four thousand, three hundred nine".