3896845986 has 32 divisors (see below), whose sum is σ = 8521998336. Its totient is φ = 1178114000.

The previous prime is 3896845973. The next prime is 3896845987. The reversal of 3896845986 is 6895486983.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (3896845987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40050 + ... + 96941.

It is an arithmetic number, because the mean of its divisors is an integer number (266312448).

Almost surely, 2^3896845986 is an apocalyptic number.

3896845986 is an abundant number, since it is smaller than the sum of its proper divisors (4625152350).

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

3896845986 is a wasteful number, since it uses less digits than its factorization.

3896845986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137438.

The product of its digits is 89579520, while the sum is 66.

The square root of 3896845986 is about 62424.7225544495. The cubic root of 3896845986 is about 1573.6364765375.

The spelling of 3896845986 in words is "three billion, eight hundred ninety-six million, eight hundred forty-five thousand, nine hundred eighty-six".