9944398937 has 4 divisors (see below), whose sum is σ = 10848435216. Its totient is φ = 9040362660.

The previous prime is 9944398927. The next prime is 9944398949. The reversal of 9944398937 is 7398934499.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9944398937 - 2⁶ = 9944398873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9944398907) 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, 452018123 + ... + 452018144.

It is an arithmetic number, because the mean of its divisors is an integer number (2712108804).

Almost surely, 2^9944398937 is an apocalyptic number.

It is an amenable number.

9944398937 is a deficient number, since it is larger than the sum of its proper divisors (904036279).

9944398937 is a wasteful number, since it uses less digits than its factorization.

9944398937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904036278.

The product of its digits is 52907904, while the sum is 65.

The square root of 9944398937 is about 99721.6071721671. The cubic root of 9944398937 is about 2150.4343046919.

The spelling of 9944398937 in words is "nine billion, nine hundred forty-four million, three hundred ninety-eight thousand, nine hundred thirty-seven".