2438689139 has 2 divisors, whose sum is σ = 2438689140. Its totient is φ = 2438689138.

The previous prime is 2438689091. The next prime is 2438689147. The reversal of 2438689139 is 9319868342.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2438689139 - 2⁸ = 2438688883 is a prime.

It is a super-2 number, since 2×2438689139² = 11894409433353122642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2438689189) 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, 1219344569 + 1219344570.

It is an arithmetic number, because the mean of its divisors is an integer number (1219344570).

Almost surely, 2^2438689139 is an apocalyptic number.

2438689139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2438689139 is an equidigital number, since it uses as much as digits as its factorization.

2438689139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 53.

The square root of 2438689139 is about 49383.0855556839. The cubic root of 2438689139 is about 1346.0219683165.

The spelling of 2438689139 in words is "two billion, four hundred thirty-eight million, six hundred eighty-nine thousand, one hundred thirty-nine".