421338338 has 16 divisors (see below), whose sum is σ = 680745120. Its totient is φ = 194939136.

The previous prime is 421338317. The next prime is 421338343. The reversal of 421338338 is 833833124.

It is a junction number, because it is equal to n+sod(n) for n = 421338298 and 421338307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127295 + ... + 130562.

It is an arithmetic number, because the mean of its divisors is an integer number (42546570).

Almost surely, 2^421338338 is an apocalyptic number.

421338338 is a deficient number, since it is larger than the sum of its proper divisors (259406782).

421338338 is a wasteful number, since it uses less digits than its factorization.

421338338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257921.

The product of its digits is 41472, while the sum is 35.

The square root of 421338338 is about 20526.5276654382. The cubic root of 421338338 is about 749.6818431281.

The spelling of 421338338 in words is "four hundred twenty-one million, three hundred thirty-eight thousand, three hundred thirty-eight".