13291299 has 18 divisors (see below), whose sum is σ = 22333740. Its totient is φ = 7594776.

The previous prime is 13291261. The next prime is 13291301. The reversal of 13291299 is 99219231.

It is a happy number.

It is not a de Polignac number, because 13291299 - 2¹³ = 13283107 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13291199) 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 17 ways as a sum of consecutive naturals, for example, 14629 + ... + 15510.

Almost surely, 2^13291299 is an apocalyptic number.

13291299 is a deficient number, since it is larger than the sum of its proper divisors (9042441).

13291299 is a wasteful number, since it uses less digits than its factorization.

13291299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30159 (or 30149 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 13291299 is about 3645.7233850088. The cubic root of 13291299 is about 236.8767719158.

It can be divided in two parts, 1329 and 1299, that added together give a triangular number (2628 = T₇₂).

The spelling of 13291299 in words is "thirteen million, two hundred ninety-one thousand, two hundred ninety-nine".