4000003912 has 8 divisors (see below), whose sum is σ = 7500007350. Its totient is φ = 2000001952.

The previous prime is 4000003871. The next prime is 4000003913. The reversal of 4000003912 is 2193000004.

It can be written as a sum of positive squares in only one way, i.e., 3674056996 + 325946916 = 60614^2 + 18054^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 4000003912.

It is not an unprimeable number, because it can be changed into a prime (4000003913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250000237 + ... + 250000252.

Almost surely, 2^4000003912 is an apocalyptic number.

It is an amenable number.

4000003912 is a deficient number, since it is larger than the sum of its proper divisors (3500003438).

4000003912 is a wasteful number, since it uses less digits than its factorization.

4000003912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500000495 (or 500000491 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 4000003912 is about 63245.5841304355. The cubic root of 4000003912 is about 1587.4015694608.

Adding to 4000003912 its reverse (2193000004), we get a palindrome (6193003916).

The spelling of 4000003912 in words is "four billion, three thousand, nine hundred twelve".