12394885440 has 112 divisors (see below), whose sum is σ = 44975751552. Its totient is φ = 2833115136.

The previous prime is 12394885417. The next prime is 12394885441. The reversal of 12394885440 is 4458849321.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 12394885440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12394885441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 915519 + ... + 928958.

Almost surely, 2^12394885440 is an apocalyptic number.

12394885440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12394885440 is an abundant number, since it is smaller than the sum of its proper divisors (32580866112).

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

12394885440 is a wasteful number, since it uses less digits than its factorization.

12394885440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844504 (or 1844494 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 12394885440 in words is "twelve billion, three hundred ninety-four million, eight hundred eighty-five thousand, four hundred forty".