44444399978 has 16 divisors (see below), whose sum is σ = 72832474080. Its totient is φ = 20172757200.

The previous prime is 44444399977. The next prime is 44444399983. The reversal of 44444399978 is 87999344444.

It is not an unprimeable number, because it can be changed into a prime (44444399977) 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, 1446593 + ... + 1476996.

It is an arithmetic number, because the mean of its divisors is an integer number (4552029630).

Almost surely, 2^44444399978 is an apocalyptic number.

44444399978 is a deficient number, since it is larger than the sum of its proper divisors (28388074102).

44444399978 is a wasteful number, since it uses less digits than its factorization.

44444399978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924293.

The product of its digits is 125411328, while the sum is 65.

The spelling of 44444399978 in words is "forty-four billion, four hundred forty-four million, three hundred ninety-nine thousand, nine hundred seventy-eight".