2388989969 has 2 divisors, whose sum is σ = 2388989970. Its totient is φ = 2388989968.

The previous prime is 2388989959. The next prime is 2388990047. The reversal of 2388989969 is 9699898832.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1955850625 + 433139344 = 44225^2 + 20812^2 .

It is a cyclic number.

It is not a de Polignac number, because 2388989969 - 2²⁴ = 2372212753 is a prime.

It is a super-2 number, since 2×2388989969² = 11414546143965241922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2388989959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194494984 + 1194494985.

It is an arithmetic number, because the mean of its divisors is an integer number (1194494985).

Almost surely, 2^2388989969 is an apocalyptic number.

It is an amenable number.

2388989969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2388989969 is an equidigital number, since it uses as much as digits as its factorization.

2388989969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120932352, while the sum is 71.

The square root of 2388989969 is about 48877.2950254001. The cubic root of 2388989969 is about 1336.8154065349.

The spelling of 2388989969 in words is "two billion, three hundred eighty-eight million, nine hundred eighty-nine thousand, nine hundred sixty-nine".