12489477 has 32 divisors (see below), whose sum is σ = 22364160. Its totient is φ = 5987520.

The previous prime is 12489473. The next prime is 12489481. The reversal of 12489477 is 77498421.

It is a happy number.

12489477 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12489473) and next prime (12489481).

It is not a de Polignac number, because 12489477 - 2² = 12489473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 924 + ... + 5082.

It is an arithmetic number, because the mean of its divisors is an integer number (698880).

Almost surely, 2^12489477 is an apocalyptic number.

It is an amenable number.

12489477 is a deficient number, since it is larger than the sum of its proper divisors (9874683).

12489477 is a wasteful number, since it uses less digits than its factorization.

12489477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193.

The product of its digits is 112896, while the sum is 42.

The square root of 12489477 is about 3534.0454156674. The cubic root of 12489477 is about 232.0142988115.

The spelling of 12489477 in words is "twelve million, four hundred eighty-nine thousand, four hundred seventy-seven".