234716639 has 2 divisors, whose sum is σ = 234716640. Its totient is φ = 234716638.

The previous prime is 234716621. The next prime is 234716693. The reversal of 234716639 is 936617432.

Together with next prime (234716693) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234716639 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 234716596 and 234716605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234716239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117358319 + 117358320.

It is an arithmetic number, because the mean of its divisors is an integer number (117358320).

Almost surely, 2^234716639 is an apocalyptic number.

234716639 is a deficient number, since it is larger than the sum of its proper divisors (1).

234716639 is an equidigital number, since it uses as much as digits as its factorization.

234716639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 41.

The square root of 234716639 is about 15320.4647122729. The cubic root of 234716639 is about 616.8524479772.

The spelling of 234716639 in words is "two hundred thirty-four million, seven hundred sixteen thousand, six hundred thirty-nine".