3985225894 has 32 divisors (see below), whose sum is σ = 6672153600. Its totient is φ = 1772820000.

The previous prime is 3985225883. The next prime is 3985225903. The reversal of 3985225894 is 4985225893.

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 15 ways as a sum of consecutive naturals, for example, 192457 + ... + 212155.

It is an arithmetic number, because the mean of its divisors is an integer number (208504800).

Almost surely, 2^3985225894 is an apocalyptic number.

3985225894 is a deficient number, since it is larger than the sum of its proper divisors (2686927706).

3985225894 is a wasteful number, since it uses less digits than its factorization.

3985225894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19996.

The product of its digits is 6220800, while the sum is 55.

The square root of 3985225894 is about 63128.6455897796. The cubic root of 3985225894 is about 1585.4442715632. Note that the first 3 decimals are identical.

Subtracting 3985225894 from its reverse (4985225893), we obtain a palindrome (999999999).

The spelling of 3985225894 in words is "three billion, nine hundred eighty-five million, two hundred twenty-five thousand, eight hundred ninety-four".