383908820 has 12 divisors (see below), whose sum is σ = 806208564. Its totient is φ = 153563520.

The previous prime is 383908787. The next prime is 383908823. The reversal of 383908820 is 28809383.

It can be written as a sum of positive squares in 2 ways, for example, as 106419856 + 277488964 = 10316^2 + 16658^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383908823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9597701 + ... + 9597740.

It is an arithmetic number, because the mean of its divisors is an integer number (67184047).

Almost surely, 2^383908820 is an apocalyptic number.

It is an amenable number.

383908820 is an abundant number, since it is smaller than the sum of its proper divisors (422299744).

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

383908820 is a wasteful number, since it uses less digits than its factorization.

383908820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19195450 (or 19195448 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 383908820 is about 19593.5912991978. The cubic root of 383908820 is about 726.7907030456.

The spelling of 383908820 in words is "three hundred eighty-three million, nine hundred eight thousand, eight hundred twenty".