3893639380 has 24 divisors (see below), whose sum is σ = 8210580840. Its totient is φ = 1550991360.

The previous prime is 3893639363. The next prime is 3893639381. The reversal of 3893639380 is 839363983.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 116553616 + 3777085764 = 10796^2 + 61458^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3893639381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399085 + ... + 408724.

It is an arithmetic number, because the mean of its divisors is an integer number (342107535).

Almost surely, 2^3893639380 is an apocalyptic number.

It is an amenable number.

3893639380 is an abundant number, since it is smaller than the sum of its proper divisors (4316941460).

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

3893639380 is a wasteful number, since it uses less digits than its factorization.

3893639380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808059 (or 808057 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 52.

The square root of 3893639380 is about 62399.0334861046. The cubic root of 3893639380 is about 1573.2047242180.

The spelling of 3893639380 in words is "three billion, eight hundred ninety-three million, six hundred thirty-nine thousand, three hundred eighty".