13138394 has 8 divisors (see below), whose sum is σ = 19977780. Its totient is φ = 6479136.

The previous prime is 13138381. The next prime is 13138403. The reversal of 13138394 is 49383131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12924025 + 214369 = 3595^2 + 463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 13138394.

It is an unprimeable number.

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, 44849 + ... + 45140.

Almost surely, 2^13138394 is an apocalyptic number.

13138394 is a deficient number, since it is larger than the sum of its proper divisors (6839386).

13138394 is an equidigital number, since it uses as much as digits as its factorization.

13138394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90064.

The product of its digits is 7776, while the sum is 32.

The square root of 13138394 is about 3624.6922627997. The cubic root of 13138394 is about 235.9649114739.

The spelling of 13138394 in words is "thirteen million, one hundred thirty-eight thousand, three hundred ninety-four".