13400263 has 4 divisors (see below), whose sum is σ = 14105560. Its totient is φ = 12694968.

The previous prime is 13400251. The next prime is 13400273. The reversal of 13400263 is 36200431.

13400263 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13400263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 705277 = 13400263 / (1 + 3 + 4 + 0 + 0 + 2 + 6 + 3).

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 13400263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13400273) 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, 352620 + ... + 352657.

It is an arithmetic number, because the mean of its divisors is an integer number (3526390).

Almost surely, 2^13400263 is an apocalyptic number.

13400263 is a deficient number, since it is larger than the sum of its proper divisors (705297).

13400263 is an equidigital number, since it uses as much as digits as its factorization.

13400263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705296.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 13400263 is about 3660.6369664308. The cubic root of 13400263 is about 237.5223277254.

Adding to 13400263 its reverse (36200431), we get a palindrome (49600694).

The spelling of 13400263 in words is "thirteen million, four hundred thousand, two hundred sixty-three".