12549090 has 16 divisors (see below), whose sum is σ = 30117888. Its totient is φ = 3346416.

The previous prime is 12549073. The next prime is 12549091. The reversal of 12549090 is 9094521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 418303 = 12549090 / (1 + 2 + 5 + 4 + 9 + 0 + 9 + 0).

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 (12549091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209122 + ... + 209181.

It is an arithmetic number, because the mean of its divisors is an integer number (1882368).

Almost surely, 2^12549090 is an apocalyptic number.

12549090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12549090 is an abundant number, since it is smaller than the sum of its proper divisors (17568798).

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

12549090 is a wasteful number, since it uses less digits than its factorization.

12549090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418313.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 12549090 is about 3542.4694776384. The cubic root of 12549090 is about 232.3828523030.

The spelling of 12549090 in words is "twelve million, five hundred forty-nine thousand, ninety".