3986560440 has 48 divisors (see below), whose sum is σ = 12956322600. Its totient is φ = 1063082688.

The previous prime is 3986560423. The next prime is 3986560447. The reversal of 3986560440 is 440656893.

3986560440 is a `hidden beast` number, since 3 + 9 + 86 + 560 + 4 + 4 + 0 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986560447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5536530 + ... + 5537249.

Almost surely, 2^3986560440 is an apocalyptic number.

3986560440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3986560440 is an abundant number, since it is smaller than the sum of its proper divisors (8969762160).

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

3986560440 is a wasteful number, since it uses less digits than its factorization.

3986560440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073796 (or 11073789 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 3986560440 is about 63139.2147559660. The cubic root of 3986560440 is about 1585.6212261642.

The spelling of 3986560440 in words is "three billion, nine hundred eighty-six million, five hundred sixty thousand, four hundred forty".