420944823 has 32 divisors (see below), whose sum is σ = 674654400. Its totient is φ = 257862528.

The previous prime is 420944807. The next prime is 420944861. The reversal of 420944823 is 328449024.

420944823 is a `hidden beast` number, since 4 + 209 + 448 + 2 + 3 = 666.

It is not a de Polignac number, because 420944823 - 2⁴ = 420944807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420904823) 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 in 31 ways as a sum of consecutive naturals, for example, 77761 + ... + 82997.

It is an arithmetic number, because the mean of its divisors is an integer number (21082950).

Almost surely, 2^420944823 is an apocalyptic number.

420944823 is a deficient number, since it is larger than the sum of its proper divisors (253709577).

420944823 is a wasteful number, since it uses less digits than its factorization.

420944823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488 (or 5482 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 420944823 is about 20516.9399034066. The cubic root of 420944823 is about 749.4483783843.

The spelling of 420944823 in words is "four hundred twenty million, nine hundred forty-four thousand, eight hundred twenty-three".