842638463 has 2 divisors, whose sum is σ = 842638464. Its totient is φ = 842638462.

The previous prime is 842638451. The next prime is 842638477. The reversal of 842638463 is 364836248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 842638463 - 2⁸ = 842638207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842638483) 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, 421319231 + 421319232.

It is an arithmetic number, because the mean of its divisors is an integer number (421319232).

Almost surely, 2^842638463 is an apocalyptic number.

842638463 is a deficient number, since it is larger than the sum of its proper divisors (1).

842638463 is an equidigital number, since it uses as much as digits as its factorization.

842638463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 44.

The square root of 842638463 is about 29028.2356163788. The cubic root of 842638463 is about 944.5256572619.

The spelling of 842638463 in words is "eight hundred forty-two million, six hundred thirty-eight thousand, four hundred sixty-three".