421708846 has 16 divisors (see below), whose sum is σ = 681743664. Its totient is φ = 194485824.

The previous prime is 421708811. The next prime is 421708849. The reversal of 421708846 is 648807124.

It is a junction number, because it is equal to n+sod(n) for n = 421708799 and 421708808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421708849) 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, 33090 + ... + 44026.

It is an arithmetic number, because the mean of its divisors is an integer number (42608979).

Almost surely, 2^421708846 is an apocalyptic number.

421708846 is a deficient number, since it is larger than the sum of its proper divisors (260034818).

421708846 is a wasteful number, since it uses less digits than its factorization.

421708846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12435.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 421708846 is about 20535.5507839454. The cubic root of 421708846 is about 749.9015254413.

The spelling of 421708846 in words is "four hundred twenty-one million, seven hundred eight thousand, eight hundred forty-six".