3981420270 has 64 divisors (see below), whose sum is σ = 10678616640. Its totient is φ = 1055562624.

The previous prime is 3981420239. The next prime is 3981420293. The reversal of 3981420270 is 720241893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4092 + ... + 89328.

It is an arithmetic number, because the mean of its divisors is an integer number (166853385).

Almost surely, 2^3981420270 is an apocalyptic number.

3981420270 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 3981420270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5339308320).

3981420270 is an abundant number, since it is smaller than the sum of its proper divisors (6697196370).

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

3981420270 is a wasteful number, since it uses less digits than its factorization.

3981420270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85426 (or 85420 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 3981420270 is about 63098.4965747996. The cubic root of 3981420270 is about 1584.9394464489.

The spelling of 3981420270 in words is "three billion, nine hundred eighty-one million, four hundred twenty thousand, two hundred seventy".