3994282140 has 24 divisors (see below), whose sum is σ = 11183990160. Its totient is φ = 1065141888.

The previous prime is 3994282129. The next prime is 3994282147. The reversal of 3994282140 is 412824993.

It is a junction number, because it is equal to n+sod(n) for n = 3994282092 and 3994282101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994282147) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33285625 + ... + 33285744.

It is an arithmetic number, because the mean of its divisors is an integer number (465999590).

Almost surely, 2^3994282140 is an apocalyptic number.

3994282140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3994282140 is an abundant number, since it is smaller than the sum of its proper divisors (7189708020).

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

3994282140 is a wasteful number, since it uses less digits than its factorization.

3994282140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66571381 (or 66571379 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 3994282140 is about 63200.3333851966. Note that the first 4 decimals coincide. The cubic root of 3994282140 is about 1586.6443131948.

The spelling of 3994282140 in words is "three billion, nine hundred ninety-four million, two hundred eighty-two thousand, one hundred forty".