12289797 has 24 divisors (see below), whose sum is σ = 19953024. Its totient is φ = 7232544.

The previous prime is 12289763. The next prime is 12289801. The reversal of 12289797 is 79798221.

12289797 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12289797 - 2²⁰ = 11241221 is a prime.

It is a super-2 number, since 2×12289797² = 302078220602418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12289757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408 + ... + 4974.

It is an arithmetic number, because the mean of its divisors is an integer number (831376).

Almost surely, 2^12289797 is an apocalyptic number.

It is an amenable number.

12289797 is a deficient number, since it is larger than the sum of its proper divisors (7663227).

12289797 is a wasteful number, since it uses less digits than its factorization.

12289797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4609 (or 4606 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 12289797 is about 3505.6806757034. The cubic root of 12289797 is about 230.7711794964.

It can be divided in two parts, 1228 and 9797, that added together give a square (11025 = 105²).

The spelling of 12289797 in words is "twelve million, two hundred eighty-nine thousand, seven hundred ninety-seven".