12471397 has 4 divisors (see below), whose sum is σ = 12543660. Its totient is φ = 12399136.

The previous prime is 12471373. The next prime is 12471401. The reversal of 12471397 is 79317421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79317421 = 101 ⋅785321.

It can be written as a sum of positive squares in 2 ways, for example, as 10536516 + 1934881 = 3246^2 + 1391^2 .

It is a cyclic number.

It is not a de Polignac number, because 12471397 - 2²³ = 4082789 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 (12471307) 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 3 ways as a sum of consecutive naturals, for example, 35872 + ... + 36217.

It is an arithmetic number, because the mean of its divisors is an integer number (3135915).

Almost surely, 2^12471397 is an apocalyptic number.

It is an amenable number.

12471397 is a deficient number, since it is larger than the sum of its proper divisors (72263).

12471397 is an equidigital number, since it uses as much as digits as its factorization.

12471397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72262.

The product of its digits is 10584, while the sum is 34.

The square root of 12471397 is about 3531.4865142033. The cubic root of 12471397 is about 231.9022886684.

The spelling of 12471397 in words is "twelve million, four hundred seventy-one thousand, three hundred ninety-seven".