13671449 has 4 divisors (see below), whose sum is σ = 14914320. Its totient is φ = 12428580.

The previous prime is 13671443. The next prime is 13671457. The reversal of 13671449 is 94417631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13671449 - 2⁴ = 13671433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13671443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621419 + ... + 621440.

It is an arithmetic number, because the mean of its divisors is an integer number (3728580).

Almost surely, 2^13671449 is an apocalyptic number.

It is an amenable number.

13671449 is a deficient number, since it is larger than the sum of its proper divisors (1242871).

13671449 is a wasteful number, since it uses less digits than its factorization.

13671449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242870.

The product of its digits is 18144, while the sum is 35.

The square root of 13671449 is about 3697.4922582745. The cubic root of 13671449 is about 239.1139142895.

The spelling of 13671449 in words is "thirteen million, six hundred seventy-one thousand, four hundred forty-nine".