420839382 has 32 divisors (see below), whose sum is σ = 856759680. Its totient is φ = 137786240.

The previous prime is 420839381. The next prime is 420839407. The reversal of 420839382 is 283938024.

It is a self number, because there is not a number n which added to its sum of digits gives 420839382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420839381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86782 + ... + 91502.

It is an arithmetic number, because the mean of its divisors is an integer number (26773740).

Almost surely, 2^420839382 is an apocalyptic number.

420839382 is an abundant number, since it is smaller than the sum of its proper divisors (435920298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420839382 is a wasteful number, since it uses less digits than its factorization.

420839382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4988.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 420839382 is about 20514.3701341279. The cubic root of 420839382 is about 749.3857975889.

The spelling of 420839382 in words is "four hundred twenty million, eight hundred thirty-nine thousand, three hundred eighty-two".