12609019 has 16 divisors (see below), whose sum is σ = 13989888. Its totient is φ = 11313792.

The previous prime is 12609013. The next prime is 12609029. The reversal of 12609019 is 91090621.

It is a cyclic number.

It is not a de Polignac number, because 12609019 - 2⁷ = 12608891 is a prime.

It is a super-2 number, since 2×12609019² = 317974720284722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12609013) 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 15 ways as a sum of consecutive naturals, for example, 34174 + ... + 34540.

It is an arithmetic number, because the mean of its divisors is an integer number (874368).

Almost surely, 2^12609019 is an apocalyptic number.

12609019 is a deficient number, since it is larger than the sum of its proper divisors (1380869).

12609019 is a wasteful number, since it uses less digits than its factorization.

12609019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 12609019 is about 3550.9180503076. The cubic root of 12609019 is about 232.7521848378.

The spelling of 12609019 in words is "twelve million, six hundred nine thousand, nineteen".