4388873989 has 2 divisors, whose sum is σ = 4388873990. Its totient is φ = 4388873988.

The previous prime is 4388873921. The next prime is 4388874031. The reversal of 4388873989 is 9893788834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3839909089 + 548964900 = 61967^2 + 23430^2 .

It is a cyclic number.

It is not a de Polignac number, because 4388873989 - 2⁹ = 4388873477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4388873189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2194436994 + 2194436995.

It is an arithmetic number, because the mean of its divisors is an integer number (2194436995).

Almost surely, 2^4388873989 is an apocalyptic number.

It is an amenable number.

4388873989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4388873989 is an equidigital number, since it uses as much as digits as its factorization.

4388873989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83607552, while the sum is 67.

The square root of 4388873989 is about 66248.5772601948. The cubic root of 4388873989 is about 1637.2601969915.

The spelling of 4388873989 in words is "four billion, three hundred eighty-eight million, eight hundred seventy-three thousand, nine hundred eighty-nine".