13573849 has 4 divisors (see below), whose sum is σ = 13585060. Its totient is φ = 13562640.

The previous prime is 13573801. The next prime is 13573873. The reversal of 13573849 is 94837531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94837531 = 19 ⋅4991449.

It can be written as a sum of positive squares in 2 ways, for example, as 9653449 + 3920400 = 3107^2 + 1980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13573849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13573249) 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, 3534 + ... + 6295.

It is an arithmetic number, because the mean of its divisors is an integer number (3396265).

Almost surely, 2^13573849 is an apocalyptic number.

It is an amenable number.

13573849 is a deficient number, since it is larger than the sum of its proper divisors (11211).

13573849 is an equidigital number, since it uses as much as digits as its factorization.

13573849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11210.

The product of its digits is 90720, while the sum is 40.

The square root of 13573849 is about 3684.2704840986. The cubic root of 13573849 is about 238.5435462037.

It can be divided in two parts, 135 and 73849, that added together give a square (73984 = 272²).

The spelling of 13573849 in words is "thirteen million, five hundred seventy-three thousand, eight hundred forty-nine".