420808844 has 24 divisors (see below), whose sum is σ = 758578800. Its totient is φ = 204106176.

The previous prime is 420808841. The next prime is 420808853. The reversal of 420808844 is 448808024.

It is a junction number, because it is equal to n+sod(n) for n = 420808798 and 420808807.

It is not an unprimeable number, because it can be changed into a prime (420808841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47579 + ... + 55725.

It is an arithmetic number, because the mean of its divisors is an integer number (31607450).

Almost surely, 2^420808844 is an apocalyptic number.

It is an amenable number.

420808844 is a deficient number, since it is larger than the sum of its proper divisors (337769956).

420808844 is a wasteful number, since it uses less digits than its factorization.

420808844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8537 (or 8535 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 38.

The square root of 420808844 is about 20513.6258131029. The cubic root of 420808844 is about 749.3676708815.

The spelling of 420808844 in words is "four hundred twenty million, eight hundred eight thousand, eight hundred forty-four".