4011985924 has 72 divisors (see below), whose sum is σ = 7760696832. Its totient is φ = 1808110080.

The previous prime is 4011985909. The next prime is 4011985937. The reversal of 4011985924 is 4295891104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6609229 + ... + 6609835.

It is an arithmetic number, because the mean of its divisors is an integer number (107787456).

Almost surely, 2^4011985924 is an apocalyptic number.

It is an amenable number.

4011985924 is a deficient number, since it is larger than the sum of its proper divisors (3748710908).

4011985924 is a wasteful number, since it uses less digits than its factorization.

4011985924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 4011985924 is about 63340.2393743503. The cubic root of 4011985924 is about 1588.9850099507.

The spelling of 4011985924 in words is "four billion, eleven million, nine hundred eighty-five thousand, nine hundred twenty-four".