12609477 has 6 divisors (see below), whose sum is σ = 18213702. Its totient is φ = 8406312.

The previous prime is 12609463. The next prime is 12609481. The reversal of 12609477 is 77490621.

It is a happy number.

12609477 is a `hidden beast` number, since 1 + 2 + 609 + 47 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8946081 + 3663396 = 2991^2 + 1914^2 .

It is not a de Polignac number, because 12609477 - 2⁶ = 12609413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12604477) 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 5 ways as a sum of consecutive naturals, for example, 700518 + ... + 700535.

It is an arithmetic number, because the mean of its divisors is an integer number (3035617).

Almost surely, 2^12609477 is an apocalyptic number.

It is an amenable number.

12609477 is a deficient number, since it is larger than the sum of its proper divisors (5604225).

12609477 is a wasteful number, since it uses less digits than its factorization.

12609477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401059 (or 1401056 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 12609477 is about 3550.9825400866. The cubic root of 12609477 is about 232.7550029056.

The spelling of 12609477 in words is "twelve million, six hundred nine thousand, four hundred seventy-seven".