13403329 has 4 divisors (see below), whose sum is σ = 13656276. Its totient is φ = 13150384.

The previous prime is 13403323. The next prime is 13403333. The reversal of 13403329 is 92330431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92330431 = 31 ⋅2978401.

It can be written as a sum of positive squares in 2 ways, for example, as 6890625 + 6512704 = 2625^2 + 2552^2 .

It is a cyclic number.

It is not a de Polignac number, because 13403329 - 2⁵ = 13403297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13403323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126394 + ... + 126499.

It is an arithmetic number, because the mean of its divisors is an integer number (3414069).

Almost surely, 2^13403329 is an apocalyptic number.

It is an amenable number.

13403329 is a deficient number, since it is larger than the sum of its proper divisors (252947).

13403329 is an equidigital number, since it uses as much as digits as its factorization.

13403329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252946.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 13403329 is about 3661.0557220561. The cubic root of 13403329 is about 237.5404414973.

The spelling of 13403329 in words is "thirteen million, four hundred three thousand, three hundred twenty-nine".