9444492780 has 24 divisors (see below), whose sum is σ = 26444579952. Its totient is φ = 2518531392.

The previous prime is 9444492779. The next prime is 9444492787. The reversal of 9444492780 is 872944449.

It is not an unprimeable number, because it can be changed into a prime (9444492787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78704047 + ... + 78704166.

It is an arithmetic number, because the mean of its divisors is an integer number (1101857498).

Almost surely, 2^9444492780 is an apocalyptic number.

It is an amenable number.

9444492780 is an abundant number, since it is smaller than the sum of its proper divisors (17000087172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9444492780 is a wasteful number, since it uses less digits than its factorization.

9444492780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157408225 (or 157408223 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The square root of 9444492780 is about 97182.7802648185. The cubic root of 9444492780 is about 2113.7788411398.

The spelling of 9444492780 in words is "nine billion, four hundred forty-four million, four hundred ninety-two thousand, seven hundred eighty".