12400443403 has 8 divisors (see below), whose sum is σ = 12738857648. Its totient is φ = 12062201184.

The previous prime is 12400443401. The next prime is 12400443409. The reversal of 12400443403 is 30434400421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12400443403 - 2¹ = 12400443401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12400443401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110500 + ... + 192382.

It is an arithmetic number, because the mean of its divisors is an integer number (1592357206).

Almost surely, 2^12400443403 is an apocalyptic number.

12400443403 is a deficient number, since it is larger than the sum of its proper divisors (338414245).

12400443403 is an equidigital number, since it uses as much as digits as its factorization.

12400443403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86013.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 12400443403 its reverse (30434400421), we get a palindrome (42834843824).

The spelling of 12400443403 in words is "twelve billion, four hundred million, four hundred forty-three thousand, four hundred three".