12440000458 has 4 divisors (see below), whose sum is σ = 18660000690. Its totient is φ = 6220000228.

The previous prime is 12440000449. The next prime is 12440000497. The reversal of 12440000458 is 85400004421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12108141369 + 331859089 = 110037^2 + 18217^2 .

It is a super-2 number, since 2×12440000458² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110000113 + ... + 3110000116.

Almost surely, 2^12440000458 is an apocalyptic number.

12440000458 is a deficient number, since it is larger than the sum of its proper divisors (6220000232).

12440000458 is an equidigital number, since it uses as much as digits as its factorization.

12440000458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220000231.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 12440000458 its reverse (85400004421), we get a palindrome (97840004879).

The spelling of 12440000458 in words is "twelve billion, four hundred forty million, four hundred fifty-eight", and thus it is an aban number.