12229858 has 4 divisors (see below), whose sum is σ = 18344790. Its totient is φ = 6114928.

The previous prime is 12229843. The next prime is 12229873. The reversal of 12229858 is 85892221.

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

It is an interprime number because it is at equal distance from previous prime (12229843) and next prime (12229873).

It can be written as a sum of positive squares in only one way, i.e., 11512449 + 717409 = 3393^2 + 847^2 .

It is a plaindrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3057463 + ... + 3057466.

Almost surely, 2^12229858 is an apocalyptic number.

12229858 is a deficient number, since it is larger than the sum of its proper divisors (6114932).

12229858 is an equidigital number, since it uses as much as digits as its factorization.

12229858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6114931.

The product of its digits is 23040, while the sum is 37.

The square root of 12229858 is about 3497.1213876559. The cubic root of 12229858 is about 230.3954005198.

The spelling of 12229858 in words is "twelve million, two hundred twenty-nine thousand, eight hundred fifty-eight".