12489658 has 4 divisors (see below), whose sum is σ = 18734490. Its totient is φ = 6244828.

The previous prime is 12489649. The next prime is 12489661. The reversal of 12489658 is 85698421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85698421 = 3041 ⋅28181.

It can be written as a sum of positive squares in only one way, i.e., 12482089 + 7569 = 3533^2 + 87^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3122413 + ... + 3122416.

Almost surely, 2^12489658 is an apocalyptic number.

12489658 is a deficient number, since it is larger than the sum of its proper divisors (6244832).

12489658 is an equidigital number, since it uses as much as digits as its factorization.

12489658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6244831.

The product of its digits is 138240, while the sum is 43.

The square root of 12489658 is about 3534.0710236213. The cubic root of 12489658 is about 232.0154196053.

The spelling of 12489658 in words is "twelve million, four hundred eighty-nine thousand, six hundred fifty-eight".