3945985286 has 16 divisors (see below), whose sum is σ = 5933809440. Its totient is φ = 1968056640.

The previous prime is 3945985279. The next prime is 3945985297. The reversal of 3945985286 is 6825895493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2454695 + ... + 2456301.

It is an arithmetic number, because the mean of its divisors is an integer number (370863090).

Almost surely, 2^3945985286 is an apocalyptic number.

3945985286 is a deficient number, since it is larger than the sum of its proper divisors (1987824154).

3945985286 is a wasteful number, since it uses less digits than its factorization.

3945985286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919.

The product of its digits is 18662400, while the sum is 59.

The square root of 3945985286 is about 62817.0779804346. The cubic root of 3945985286 is about 1580.2233949471.

The spelling of 3945985286 in words is "three billion, nine hundred forty-five million, nine hundred eighty-five thousand, two hundred eighty-six".