12489101 has 4 divisors (see below), whose sum is σ = 13223772. Its totient is φ = 11754432.

The previous prime is 12489097. The next prime is 12489109. The reversal of 12489101 is 10198421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6895876 + 5593225 = 2626^2 + 2365^2 .

It is a cyclic number.

It is not a de Polignac number, because 12489101 - 2² = 12489097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489109) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 367310 + ... + 367343.

It is an arithmetic number, because the mean of its divisors is an integer number (3305943).

Almost surely, 2^12489101 is an apocalyptic number.

It is an amenable number.

12489101 is a deficient number, since it is larger than the sum of its proper divisors (734671).

12489101 is an equidigital number, since it uses as much as digits as its factorization.

12489101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734670.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 12489101 is about 3533.9922184408. The cubic root of 12489101 is about 232.0119704981.

The spelling of 12489101 in words is "twelve million, four hundred eighty-nine thousand, one hundred one".