13217049 has 6 divisors (see below), whose sum is σ = 19091306. Its totient is φ = 8811360.

The previous prime is 13217033. The next prime is 13217089. The reversal of 13217049 is 94071231.

13217049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 257049 = 3600^2 + 507^2 .

It is not a de Polignac number, because 13217049 - 2⁴ = 13217033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13217089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 734272 + ... + 734289.

Almost surely, 2^13217049 is an apocalyptic number.

It is an amenable number.

13217049 is a deficient number, since it is larger than the sum of its proper divisors (5874257).

13217049 is a wasteful number, since it uses less digits than its factorization.

13217049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468567 (or 1468564 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 13217049 is about 3635.5259591977. The cubic root of 13217049 is about 236.4348549018.

The spelling of 13217049 in words is "thirteen million, two hundred seventeen thousand, forty-nine".