13840193 has 4 divisors (see below), whose sum is σ = 14654340. Its totient is φ = 13026048.

The previous prime is 13840171. The next prime is 13840199. The reversal of 13840193 is 39104831.

13840193 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 10029889 + 3810304 = 3167^2 + 1952^2 .

It is a cyclic number.

It is not a de Polignac number, because 13840193 - 2¹⁸ = 13578049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13840199) 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, 407048 + ... + 407081.

It is an arithmetic number, because the mean of its divisors is an integer number (3663585).

Almost surely, 2^13840193 is an apocalyptic number.

It is an amenable number.

13840193 is a deficient number, since it is larger than the sum of its proper divisors (814147).

13840193 is an equidigital number, since it uses as much as digits as its factorization.

13840193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814146.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13840193 is about 3720.2409868179. The cubic root of 13840193 is about 240.0936729251.

The spelling of 13840193 in words is "thirteen million, eight hundred forty thousand, one hundred ninety-three".