4444439978 has 16 divisors (see below), whose sum is σ = 7273778400. Its totient is φ = 2019906000.

The previous prime is 4444439959. The next prime is 4444440017. The reversal of 4444439978 is 8799344444.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231653 + ... + 250103.

It is an arithmetic number, because the mean of its divisors is an integer number (454611150).

Almost surely, 2^4444439978 is an apocalyptic number.

4444439978 is a deficient number, since it is larger than the sum of its proper divisors (2829338422).

4444439978 is a wasteful number, since it uses less digits than its factorization.

4444439978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29413.

The product of its digits is 13934592, while the sum is 56.

The square root of 4444439978 is about 66666.6331683249. The cubic root of 4444439978 is about 1644.1408321268.

The spelling of 4444439978 in words is "four billion, four hundred forty-four million, four hundred thirty-nine thousand, nine hundred seventy-eight".