13609933 has 4 divisors (see below), whose sum is σ = 13685308. Its totient is φ = 13534560.

The previous prime is 13609927. The next prime is 13609957. The reversal of 13609933 is 33990631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2036329 + 11573604 = 1427^2 + 3402^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13609933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13609963) 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, 37416 + ... + 37777.

It is an arithmetic number, because the mean of its divisors is an integer number (3421327).

Almost surely, 2^13609933 is an apocalyptic number.

It is an amenable number.

13609933 is a deficient number, since it is larger than the sum of its proper divisors (75375).

13609933 is an equidigital number, since it uses as much as digits as its factorization.

13609933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75374.

The product of its (nonzero) digits is 13122, while the sum is 34.

The square root of 13609933 is about 3689.1642685031. The cubic root of 13609933 is about 238.7547363442.

The spelling of 13609933 in words is "thirteen million, six hundred nine thousand, nine hundred thirty-three".