13099543 has 4 divisors (see below), whose sum is σ = 13265440. Its totient is φ = 12933648.

The previous prime is 13099523. The next prime is 13099601. The reversal of 13099543 is 34599031.

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

It is a cyclic number.

It is not a de Polignac number, because 13099543 - 2¹⁷ = 12968471 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13099499 and 13099508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13099523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82830 + ... + 82987.

It is an arithmetic number, because the mean of its divisors is an integer number (3316360).

Almost surely, 2^13099543 is an apocalyptic number.

13099543 is a deficient number, since it is larger than the sum of its proper divisors (165897).

13099543 is an equidigital number, since it uses as much as digits as its factorization.

13099543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165896.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 13099543 is about 3619.3290814735. The cubic root of 13099543 is about 235.7320944873.

The spelling of 13099543 in words is "thirteen million, ninety-nine thousand, five hundred forty-three".