12147399 has 12 divisors (see below), whose sum is σ = 19141512. Its totient is φ = 7362000.

The previous prime is 12147397. The next prime is 12147463. The reversal of 12147399 is 99374121.

12147399 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12147399 - 2¹ = 12147397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12147391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61252 + ... + 61449.

It is an arithmetic number, because the mean of its divisors is an integer number (1595126).

Almost surely, 2^12147399 is an apocalyptic number.

12147399 is a deficient number, since it is larger than the sum of its proper divisors (6994113).

12147399 is a wasteful number, since it uses less digits than its factorization.

12147399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122718 (or 122715 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 12147399 is about 3485.3118942212. The cubic root of 12147399 is about 229.8764238491.

The spelling of 12147399 in words is "twelve million, one hundred forty-seven thousand, three hundred ninety-nine".