9944418977 has 4 divisors (see below), whose sum is σ = 9982230720. Its totient is φ = 9906607236.

The previous prime is 9944418937. The next prime is 9944419027. The reversal of 9944418977 is 7798144499.

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 9944418977 - 2¹⁰ = 9944417953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9944418937) 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, 18905477 + ... + 18906002.

It is an arithmetic number, because the mean of its divisors is an integer number (2495557680).

Almost surely, 2^9944418977 is an apocalyptic number.

It is an amenable number.

9944418977 is a deficient number, since it is larger than the sum of its proper divisors (37811743).

9944418977 is a wasteful number, since it uses less digits than its factorization.

9944418977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37811742.

The product of its digits is 18289152, while the sum is 62.

The square root of 9944418977 is about 99721.7076518448. The cubic root of 9944418977 is about 2150.4357492128.

The spelling of 9944418977 in words is "nine billion, nine hundred forty-four million, four hundred eighteen thousand, nine hundred seventy-seven".