12289715 has 4 divisors (see below), whose sum is σ = 14747664. Its totient is φ = 9831768.

The previous prime is 12289687. The next prime is 12289757. The reversal of 12289715 is 51798221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51798221 = 1279 ⋅40499.

It is a cyclic number.

It is not a de Polignac number, because 12289715 - 2¹² = 12285619 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1228967 + ... + 1228976.

It is an arithmetic number, because the mean of its divisors is an integer number (3686916).

Almost surely, 2^12289715 is an apocalyptic number.

12289715 is a deficient number, since it is larger than the sum of its proper divisors (2457949).

12289715 is an equidigital number, since it uses as much as digits as its factorization.

12289715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457948.

The product of its digits is 10080, while the sum is 35.

The square root of 12289715 is about 3505.6689803802. The cubic root of 12289715 is about 230.7706662446.

The spelling of 12289715 in words is "twelve million, two hundred eighty-nine thousand, seven hundred fifteen".