13490005 has 4 divisors (see below), whose sum is σ = 16188012. Its totient is φ = 10792000.

The previous prime is 13489963. The next prime is 13490023. The reversal of 13490005 is 50009431.

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 7349521 + 6140484 = 2711^2 + 2478^2 .

It is not a de Polignac number, because 13490005 - 2¹³ = 13481813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348996 + ... + 1349005.

It is an arithmetic number, because the mean of its divisors is an integer number (4047003).

Almost surely, 2^13490005 is an apocalyptic number.

It is an amenable number.

13490005 is a deficient number, since it is larger than the sum of its proper divisors (2698007).

13490005 is an equidigital number, since it uses as much as digits as its factorization.

13490005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698006.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 13490005 is about 3672.8742151073. The cubic root of 13490005 is about 238.0513800518.

Adding to 13490005 its reverse (50009431), we get a palindrome (63499436).

The spelling of 13490005 in words is "thirteen million, four hundred ninety thousand, five".