3920389830 has 96 divisors (see below), whose sum is σ = 11769436224. Its totient is φ = 886837248.

The previous prime is 3920389819. The next prime is 3920389867. The reversal of 3920389830 is 389830293.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29034 + ... + 93186.

It is an arithmetic number, because the mean of its divisors is an integer number (122598294).

Almost surely, 2^3920389830 is an apocalyptic number.

3920389830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3920389830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5884718112).

3920389830 is an abundant number, since it is smaller than the sum of its proper divisors (7849046394).

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

3920389830 is a wasteful number, since it uses less digits than its factorization.

3920389830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64270 (or 64267 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 3920389830 is about 62613.0164582413. The cubic root of 3920389830 is about 1576.7992981756.

The spelling of 3920389830 in words is "three billion, nine hundred twenty million, three hundred eighty-nine thousand, eight hundred thirty".