13215849 has 12 divisors (see below), whose sum is σ = 18598896. Its totient is φ = 8346168.

The previous prime is 13215821. The next prime is 13215859. The reversal of 13215849 is 94851231.

It is not a de Polignac number, because 13215849 - 2⁷ = 13215721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13215809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5019 + ... + 7184.

It is an arithmetic number, because the mean of its divisors is an integer number (1549908).

Almost surely, 2^13215849 is an apocalyptic number.

13215849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13215849 is a deficient number, since it is larger than the sum of its proper divisors (5383047).

13215849 is a wasteful number, since it uses less digits than its factorization.

13215849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12244 (or 12225 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 13215849 is about 3635.3609174331. The cubic root of 13215849 is about 236.4276992346.

The spelling of 13215849 in words is "thirteen million, two hundred fifteen thousand, eight hundred forty-nine".