3912438390 has 256 divisors, whose sum is σ = 11926241280. Its totient is φ = 801239040.

The previous prime is 3912438389. The next prime is 3912438427. The reversal of 3912438390 is 938342193.

3912438390 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 5813094 + ... + 5813766.

It is an arithmetic number, because the mean of its divisors is an integer number (46586880).

Almost surely, 2^3912438390 is an apocalyptic number.

3912438390 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 3912438390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5963120640).

3912438390 is an abundant number, since it is smaller than the sum of its proper divisors (8013802890).

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

3912438390 is a wasteful number, since it uses less digits than its factorization.

3912438390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 3912438390 is about 62549.4875278767. The cubic root of 3912438390 is about 1575.7325410726.

The spelling of 3912438390 in words is "three billion, nine hundred twelve million, four hundred thirty-eight thousand, three hundred ninety".