4400005643977 has 2 divisors, whose sum is σ = 4400005643978. Its totient is φ = 4400005643976.

The previous prime is 4400005643959. The next prime is 4400005644179. The reversal of 4400005643977 is 7793465000044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4135443549241 + 264562094736 = 2033579^2 + 514356^2 .

It is a cyclic number.

It is not a de Polignac number, because 4400005643977 - 2⁷ = 4400005643849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4400005643977.

It is not a weakly prime, because it can be changed into another prime (4400005643927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2200002821988 + 2200002821989.

It is an arithmetic number, because the mean of its divisors is an integer number (2200002821989).

Almost surely, 2^{4400005643977} is an apocalyptic number.

It is an amenable number.

4400005643977 is a deficient number, since it is larger than the sum of its proper divisors (1).

4400005643977 is an equidigital number, since it uses as much as digits as its factorization.

4400005643977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 4400005643977 in words is "four trillion, four hundred billion, five million, six hundred forty-three thousand, nine hundred seventy-seven".