421832783 has 2 divisors, whose sum is σ = 421832784. Its totient is φ = 421832782.

The previous prime is 421832773. The next prime is 421832867. The reversal of 421832783 is 387238124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421832783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421832773) 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, 210916391 + 210916392.

It is an arithmetic number, because the mean of its divisors is an integer number (210916392).

Almost surely, 2^421832783 is an apocalyptic number.

421832783 is a deficient number, since it is larger than the sum of its proper divisors (1).

421832783 is an equidigital number, since it uses as much as digits as its factorization.

421832783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 38.

The square root of 421832783 is about 20538.5681828116. The cubic root of 421832783 is about 749.9749816840.

The spelling of 421832783 in words is "four hundred twenty-one million, eight hundred thirty-two thousand, seven hundred eighty-three".