12149490 has 16 divisors (see below), whose sum is σ = 29158848. Its totient is φ = 3239856.

The previous prime is 12149483. The next prime is 12149507. The reversal of 12149490 is 9494121.

It is a super-2 number, since 2×12149490² = 295220214520200, which contains 22 as substring.

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: 404983 = 12149490 / (1 + 2 + 1 + 4 + 9 + 4 + 9 + 0).

It is an alternating number because its digits alternate between odd and even.

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, 202462 + ... + 202521.

It is an arithmetic number, because the mean of its divisors is an integer number (1822428).

Almost surely, 2^12149490 is an apocalyptic number.

12149490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12149490 is an abundant number, since it is smaller than the sum of its proper divisors (17009358).

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

12149490 is a wasteful number, since it uses less digits than its factorization.

12149490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404993.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 12149490 is about 3485.6118544669. The cubic root of 12149490 is about 229.8896130656.

The spelling of 12149490 in words is "twelve million, one hundred forty-nine thousand, four hundred ninety".