12477971 has 16 divisors (see below), whose sum is σ = 14031360. Its totient is φ = 11001120.

The previous prime is 12477961. The next prime is 12477973. The reversal of 12477971 is 17977421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12477971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12477973) 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, 72041 + ... + 72213.

It is an arithmetic number, because the mean of its divisors is an integer number (876960).

Almost surely, 2^12477971 is an apocalyptic number.

12477971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12477971 is a deficient number, since it is larger than the sum of its proper divisors (1553389).

12477971 is a wasteful number, since it uses less digits than its factorization.

12477971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346.

The product of its digits is 24696, while the sum is 38.

The square root of 12477971 is about 3532.4171610952. The cubic root of 12477971 is about 231.9430287676.

The spelling of 12477971 in words is "twelve million, four hundred seventy-seven thousand, nine hundred seventy-one".