3939189408 has 768 divisors, whose sum is σ = 15711252480. Its totient is φ = 940584960.

The previous prime is 3939189343. The next prime is 3939189433. The reversal of 3939189408 is 8049819393.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 91609035 + ... + 91609077.

It is an arithmetic number, because the mean of its divisors is an integer number (20457360).

Almost surely, 2^3939189408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3939189408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7855626240).

3939189408 is an abundant number, since it is smaller than the sum of its proper divisors (11772063072).

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

3939189408 is a wasteful number, since it uses less digits than its factorization.

3939189408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 3939189408 is about 62762.9620715912. The cubic root of 3939189408 is about 1579.3157064545.

The spelling of 3939189408 in words is "three billion, nine hundred thirty-nine million, one hundred eighty-nine thousand, four hundred eight".