3938985420 has 48 divisors (see below), whose sum is σ = 11032330848. Its totient is φ = 1050094080.

The previous prime is 3938985397. The next prime is 3938985433. The reversal of 3938985420 is 245898393.

It is a super-2 number, since 2×3938985420² = 31031212277945152800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268680 + ... + 282960.

It is an arithmetic number, because the mean of its divisors is an integer number (229840226).

Almost surely, 2^3938985420 is an apocalyptic number.

3938985420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3938985420 is an abundant number, since it is smaller than the sum of its proper divisors (7093345428).

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

3938985420 is a wasteful number, since it uses less digits than its factorization.

3938985420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18890 (or 18888 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 3938985420 is about 62761.3369838470. The cubic root of 3938985420 is about 1579.2884447533.

The spelling of 3938985420 in words is "three billion, nine hundred thirty-eight million, nine hundred eighty-five thousand, four hundred twenty".