4430439889 has 2 divisors, whose sum is σ = 4430439890. Its totient is φ = 4430439888.

The previous prime is 4430439851. The next prime is 4430439911. The reversal of 4430439889 is 9889340344.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3841892289 + 588547600 = 61983^2 + 24260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4430439889 is a prime.

It is a super-2 number, since 2×4430439889² = 39257595220084664642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4430409889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2215219944 + 2215219945.

It is an arithmetic number, because the mean of its divisors is an integer number (2215219945).

Almost surely, 2^4430439889 is an apocalyptic number.

It is an amenable number.

4430439889 is a deficient number, since it is larger than the sum of its proper divisors (1).

4430439889 is an equidigital number, since it uses as much as digits as its factorization.

4430439889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 52.

The square root of 4430439889 is about 66561.5496288961. The cubic root of 4430439889 is about 1642.4126556727.

The spelling of 4430439889 in words is "four billion, four hundred thirty million, four hundred thirty-nine thousand, eight hundred eighty-nine".