10002044399 has 4 divisors (see below), whose sum is σ = 10008262320. Its totient is φ = 9995826480.

The previous prime is 10002044389. The next prime is 10002044413. The reversal of 10002044399 is 99344020001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10002044399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002044309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3106547 + ... + 3109764.

It is an arithmetic number, because the mean of its divisors is an integer number (2502065580).

Almost surely, 2^10002044399 is an apocalyptic number.

10002044399 is a deficient number, since it is larger than the sum of its proper divisors (6217921).

10002044399 is an equidigital number, since it uses as much as digits as its factorization.

10002044399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6217920.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 10002044399 in words is "ten billion, two million, forty-four thousand, three hundred ninety-nine".