2388406639 has 2 divisors, whose sum is σ = 2388406640. Its totient is φ = 2388406638.

The previous prime is 2388406633. The next prime is 2388406667. The reversal of 2388406639 is 9366048832.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2388406639 - 2⁵ = 2388406607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2388406592 and 2388406601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2388406633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194203319 + 1194203320.

It is an arithmetic number, because the mean of its divisors is an integer number (1194203320).

Almost surely, 2^2388406639 is an apocalyptic number.

2388406639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2388406639 is an equidigital number, since it uses as much as digits as its factorization.

2388406639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The square root of 2388406639 is about 48871.3273709647. The cubic root of 2388406639 is about 1336.7065923471.

The spelling of 2388406639 in words is "two billion, three hundred eighty-eight million, four hundred six thousand, six hundred thirty-nine".