1234239863 has 2 divisors, whose sum is σ = 1234239864. Its totient is φ = 1234239862.

The previous prime is 1234239857. The next prime is 1234240009. The reversal of 1234239863 is 3689324321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1234239863 - 2⁸ = 1234239607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1234239863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234239803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617119931 + 617119932.

It is an arithmetic number, because the mean of its divisors is an integer number (617119932).

Almost surely, 2^1234239863 is an apocalyptic number.

1234239863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234239863 is an equidigital number, since it uses as much as digits as its factorization.

1234239863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 41.

The square root of 1234239863 is about 35131.7500702712. The cubic root of 1234239863 is about 1072.6709592484.

The spelling of 1234239863 in words is "one billion, two hundred thirty-four million, two hundred thirty-nine thousand, eight hundred sixty-three".