440404040389 has 2 divisors, whose sum is σ = 440404040390. Its totient is φ = 440404040388.

The previous prime is 440404040371. The next prime is 440404040407. The reversal of 440404040389 is 983040404044.

It is a balanced prime because it is at equal distance from previous prime (440404040371) and next prime (440404040407).

It can be written as a sum of positive squares in only one way, i.e., 391197709764 + 49206330625 = 625458^2 + 221825^2 .

It is a cyclic number.

It is not a de Polignac number, because 440404040389 - 2⁷ = 440404040261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440404040309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220202020194 + 220202020195.

It is an arithmetic number, because the mean of its divisors is an integer number (220202020195).

Almost surely, 2^440404040389 is an apocalyptic number.

It is an amenable number.

440404040389 is a deficient number, since it is larger than the sum of its proper divisors (1).

440404040389 is an equidigital number, since it uses as much as digits as its factorization.

440404040389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 440404040389 in words is "four hundred forty billion, four hundred four million, forty thousand, three hundred eighty-nine".