12487477 has 6 divisors (see below), whose sum is σ = 12761078. Its totient is φ = 12219624.

The previous prime is 12487421. The next prime is 12487483. The reversal of 12487477 is 77478421.

It can be written as a sum of positive squares in only one way, i.e., 11771761 + 715716 = 3431^2 + 846^2 .

It is not a de Polignac number, because 12487477 - 2²³ = 4098869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12487417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 618 + ... + 5035.

Almost surely, 2^12487477 is an apocalyptic number.

It is an amenable number.

12487477 is a deficient number, since it is larger than the sum of its proper divisors (273601).

12487477 is an frugal number, since it uses more digits than its factorization.

12487477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747 (or 5700 counting only the distinct ones).

The product of its digits is 87808, while the sum is 40.

The square root of 12487477 is about 3533.7624424967. The cubic root of 12487477 is about 232.0019136287.

The spelling of 12487477 in words is "twelve million, four hundred eighty-seven thousand, four hundred seventy-seven".