13817489 has 4 divisors (see below), whose sum is σ = 15791424. Its totient is φ = 11843556.

The previous prime is 13817467. The next prime is 13817509. The reversal of 13817489 is 98471831.

13817489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98471831 = 283 ⋅347957.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13817489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13817459) 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, 986957 + ... + 986970.

It is an arithmetic number, because the mean of its divisors is an integer number (3947856).

Almost surely, 2^13817489 is an apocalyptic number.

It is an amenable number.

13817489 is a deficient number, since it is larger than the sum of its proper divisors (1973935).

13817489 is an equidigital number, since it uses as much as digits as its factorization.

13817489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973934.

The product of its digits is 48384, while the sum is 41.

The square root of 13817489 is about 3717.1883191466. The cubic root of 13817489 is about 239.9623146847.

The spelling of 13817489 in words is "thirteen million, eight hundred seventeen thousand, four hundred eighty-nine".