12339489240 has 256 divisors, whose sum is σ = 45726105600. Its totient is φ = 2939328000.

The previous prime is 12339489223. The next prime is 12339489269. The reversal of 12339489240 is 4298493321.

12339489240 is a `hidden beast` number, since 12 + 3 + 394 + 8 + 9 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 421065 + ... + 449415.

It is an arithmetic number, because the mean of its divisors is an integer number (178617600).

Almost surely, 2^12339489240 is an apocalyptic number.

12339489240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12339489240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22863052800).

12339489240 is an abundant number, since it is smaller than the sum of its proper divisors (33386616360).

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

12339489240 is a wasteful number, since it uses less digits than its factorization.

12339489240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28415 (or 28405 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 12339489240 in words is "twelve billion, three hundred thirty-nine million, four hundred eighty-nine thousand, two hundred forty".