3986849491000 has 32 divisors (see below), whose sum is σ = 9329227811280. Its totient is φ = 1594739796000.

The previous prime is 3986849490977. The next prime is 3986849491127. The reversal of 3986849491000 is 1949486893.

It is a super-3 number, since 3×3986849491000³ (a number of 39 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3986849491000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1993423746 + ... + 1993425745.

Almost surely, 2^{3986849491000} is an apocalyptic number.

It is an amenable number.

3986849491000 is an abundant number, since it is smaller than the sum of its proper divisors (5342378320280).

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

3986849491000 is a wasteful number, since it uses less digits than its factorization.

3986849491000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986849512 (or 3986849498 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 61.

The spelling of 3986849491000 in words is "three trillion, nine hundred eighty-six billion, eight hundred forty-nine million, four hundred ninety-one thousand".