13830709 has 4 divisors (see below), whose sum is σ = 14307660. Its totient is φ = 13353760.

The previous prime is 13830703. The next prime is 13830757. The reversal of 13830709 is 90703831.

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 8439025 + 5391684 = 2905^2 + 2322^2 .

It is a cyclic number.

It is not a de Polignac number, because 13830709 - 2³ = 13830701 is a prime.

It is a super-2 number, since 2×13830709² = 382577022885362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13830701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238432 + ... + 238489.

It is an arithmetic number, because the mean of its divisors is an integer number (3576915).

Almost surely, 2^13830709 is an apocalyptic number.

It is an amenable number.

13830709 is a deficient number, since it is larger than the sum of its proper divisors (476951).

13830709 is an equidigital number, since it uses as much as digits as its factorization.

13830709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476950.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 13830709 is about 3718.9661197704. The cubic root of 13830709 is about 240.0388189523.

The spelling of 13830709 in words is "thirteen million, eight hundred thirty thousand, seven hundred nine".