2389888009 has 2 divisors, whose sum is σ = 2389888010. Its totient is φ = 2389888008.

The previous prime is 2389888003. The next prime is 2389888063. The reversal of 2389888009 is 9008889832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1562462784 + 827425225 = 39528^2 + 28765^2 .

It is a cyclic number.

It is not a de Polignac number, because 2389888009 - 2⁵ = 2389887977 is a prime.

It is not a weakly prime, because it can be changed into another prime (2389888003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194944004 + 1194944005.

It is an arithmetic number, because the mean of its divisors is an integer number (1194944005).

Almost surely, 2^2389888009 is an apocalyptic number.

It is an amenable number.

2389888009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2389888009 is an equidigital number, since it uses as much as digits as its factorization.

2389888009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 55.

The square root of 2389888009 is about 48886.4808408214. The cubic root of 2389888009 is about 1336.9828920032.

The spelling of 2389888009 in words is "two billion, three hundred eighty-nine million, eight hundred eighty-eight thousand, nine".