12347209924 has 27 divisors (see below), whose sum is σ = 25138558893. Its totient is φ = 5290994688.

The previous prime is 12347209921. The next prime is 12347209943. The reversal of 12347209924 is 42990274321.

The square root of 12347209924 is 111118.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12247848900 + 99361024 = 110670^2 + 9968^2 .

It is not an unprimeable number, because it can be changed into a prime (12347209921) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1551684 + ... + 1559620.

Almost surely, 2^12347209924 is an apocalyptic number.

12347209924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12347209924 is the 111118-th square number.

It is an amenable number.

12347209924 is an abundant number, since it is smaller than the sum of its proper divisors (12791348969).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12347209924 is an frugal number, since it uses more digits than its factorization.

12347209924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15892 (or 7946 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 12347209924 in words is "twelve billion, three hundred forty-seven million, two hundred nine thousand, nine hundred twenty-four".