420836863 has 2 divisors, whose sum is σ = 420836864. Its totient is φ = 420836862.

The previous prime is 420836861. The next prime is 420836879. The reversal of 420836863 is 368638024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420836863 - 2¹ = 420836861 is a prime.

Together with 420836861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420836861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210418431 + 210418432.

It is an arithmetic number, because the mean of its divisors is an integer number (210418432).

Almost surely, 2^420836863 is an apocalyptic number.

420836863 is a deficient number, since it is larger than the sum of its proper divisors (1).

420836863 is an equidigital number, since it uses as much as digits as its factorization.

420836863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 420836863 is about 20514.3087380492. The cubic root of 420836863 is about 749.3843023973.

The spelling of 420836863 in words is "four hundred twenty million, eight hundred thirty-six thousand, eight hundred sixty-three".