12243898 has 4 divisors (see below), whose sum is σ = 18365850. Its totient is φ = 6121948.

The previous prime is 12243883. The next prime is 12243899. The reversal of 12243898 is 89834221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89834221 = 659 ⋅136319.

It can be written as a sum of positive squares in only one way, i.e., 12201049 + 42849 = 3493^2 + 207^2 .

It is not an unprimeable number, because it can be changed into a prime (12243899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060973 + ... + 3060976.

Almost surely, 2^12243898 is an apocalyptic number.

12243898 is a deficient number, since it is larger than the sum of its proper divisors (6121952).

12243898 is an equidigital number, since it uses as much as digits as its factorization.

12243898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6121951.

The product of its digits is 27648, while the sum is 37.

The square root of 12243898 is about 3499.1281771321. The cubic root of 12243898 is about 230.4835322155.

The spelling of 12243898 in words is "twelve million, two hundred forty-three thousand, eight hundred ninety-eight".