3986846240 has 48 divisors (see below), whose sum is σ = 10143462168. Its totient is φ = 1472065536.

The previous prime is 3986846231. The next prime is 3986846249. The reversal of 3986846240 is 426486893.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3986846231) and next prime (3986846249).

It can be written as a sum of positive squares in 4 ways, for example, as 1825340176 + 2161506064 = 42724^2 + 46492^2 .

It is a super-4 number, since 4×3986846240⁴ (a number of 40 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (3986846249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956297 + ... + 960456.

Almost surely, 2^3986846240 is an apocalyptic number.

It is an amenable number.

3986846240 is an abundant number, since it is smaller than the sum of its proper divisors (6156615928).

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

3986846240 is a wasteful number, since it uses less digits than its factorization.

3986846240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916781 (or 1916773 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The square root of 3986846240 is about 63141.4779681312. The cubic root of 3986846240 is about 1585.6591167823.

The spelling of 3986846240 in words is "three billion, nine hundred eighty-six million, eight hundred forty-six thousand, two hundred forty".