3982691440 has 160 divisors (see below), whose sum is σ = 11475265536. Its totient is φ = 1251763200.

The previous prime is 3982691429. The next prime is 3982691483. The reversal of 3982691440 is 441962893.

It is a super-2 number, since 2×3982691440² = 31723662212498547200, which contains 22 as substring.

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, 1097469 + ... + 1101091.

Almost surely, 2^3982691440 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 3982691440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5737632768).

3982691440 is an abundant number, since it is smaller than the sum of its proper divisors (7492574096).

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

3982691440 is a wasteful number, since it uses less digits than its factorization.

3982691440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807 (or 3801 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 3982691440 is about 63108.5686733585. The cubic root of 3982691440 is about 1585.1081059522.

The spelling of 3982691440 in words is "three billion, nine hundred eighty-two million, six hundred ninety-one thousand, four hundred forty".