12477988 has 6 divisors (see below), whose sum is σ = 21836486. Its totient is φ = 6238992.

The previous prime is 12477979. The next prime is 12477989. The reversal of 12477988 is 88977421.

12477988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10381284 + 2096704 = 3222^2 + 1448^2 .

It is not an unprimeable number, because it can be changed into a prime (12477989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1559745 + ... + 1559752.

Almost surely, 2^12477988 is an apocalyptic number.

It is an amenable number.

12477988 is a deficient number, since it is larger than the sum of its proper divisors (9358498).

12477988 is a wasteful number, since it uses less digits than its factorization.

12477988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119501 (or 3119499 counting only the distinct ones).

The product of its digits is 225792, while the sum is 46.

The square root of 12477988 is about 3532.4195673787. The cubic root of 12477988 is about 231.9431341007.

The spelling of 12477988 in words is "twelve million, four hundred seventy-seven thousand, nine hundred eighty-eight".