12193898 has 4 divisors (see below), whose sum is σ = 18290850. Its totient is φ = 6096948.

The previous prime is 12193889. The next prime is 12193919. The reversal of 12193898 is 89839121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11950849 + 243049 = 3457^2 + 493^2 .

It is a super-2 number, since 2×12193898² = 297382296868808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3048473 + ... + 3048476.

Almost surely, 2^12193898 is an apocalyptic number.

12193898 is a deficient number, since it is larger than the sum of its proper divisors (6096952).

12193898 is an equidigital number, since it uses as much as digits as its factorization.

12193898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6096951.

The product of its digits is 31104, while the sum is 41.

The square root of 12193898 is about 3491.9762313051. The cubic root of 12193898 is about 230.1693648574.

The spelling of 12193898 in words is "twelve million, one hundred ninety-three thousand, eight hundred ninety-eight".