12489090 has 32 divisors (see below), whose sum is σ = 30131136. Its totient is φ = 3312960.

The previous prime is 12489089. The next prime is 12489097. The reversal of 12489090 is 9098421.

It is not an unprimeable number, because it can be changed into a prime (12489097) 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 in 15 ways as a sum of consecutive naturals, for example, 5344 + ... + 7316.

It is an arithmetic number, because the mean of its divisors is an integer number (941598).

Almost surely, 2^12489090 is an apocalyptic number.

12489090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12489090 is an abundant number, since it is smaller than the sum of its proper divisors (17642046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12489090 is a wasteful number, since it uses less digits than its factorization.

12489090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12489090 is about 3533.9906621269. The cubic root of 12489090 is about 232.0119023818.

The spelling of 12489090 in words is "twelve million, four hundred eighty-nine thousand, ninety".