12489554 has 16 divisors (see below), whose sum is σ = 23357376. Its totient is φ = 4866000.

The previous prime is 12489541. The next prime is 12489569. The reversal of 12489554 is 45598421.

It is a Curzon number.

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 in 7 ways as a sum of consecutive naturals, for example, 40397 + ... + 40704.

It is an arithmetic number, because the mean of its divisors is an integer number (1459836).

Almost surely, 2^12489554 is an apocalyptic number.

12489554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12489554 is a deficient number, since it is larger than the sum of its proper divisors (10867822).

12489554 is a wasteful number, since it uses less digits than its factorization.

12489554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81121.

The product of its digits is 57600, while the sum is 38.

The square root of 12489554 is about 3534.0563096816. The cubic root of 12489554 is about 232.0147756146.

The spelling of 12489554 in words is "twelve million, four hundred eighty-nine thousand, five hundred fifty-four".