12983858 has 4 divisors (see below), whose sum is σ = 19475790. Its totient is φ = 6491928.

The previous prime is 12983857. The next prime is 12983879. The reversal of 12983858 is 85838921.

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., 10975969 + 2007889 = 3313^2 + 1417^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12983857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3245963 + ... + 3245966.

Almost surely, 2^12983858 is an apocalyptic number.

12983858 is a deficient number, since it is larger than the sum of its proper divisors (6491932).

12983858 is an equidigital number, since it uses as much as digits as its factorization.

12983858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6491931.

The product of its digits is 138240, while the sum is 44.

The square root of 12983858 is about 3603.3120875106. The cubic root of 12983858 is about 235.0361073235.

The spelling of 12983858 in words is "twelve million, nine hundred eighty-three thousand, eight hundred fifty-eight".