3999936312 has 48 divisors (see below), whose sum is σ = 10840929840. Its totient is φ = 1332355968.

The previous prime is 3999936277. The next prime is 3999936313. The reversal of 3999936312 is 2136399993.

It is a happy number.

It is a super-3 number, since 3×3999936312³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999936313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84988 + ... + 123380.

It is an arithmetic number, because the mean of its divisors is an integer number (225852705).

Almost surely, 2^3999936312 is an apocalyptic number.

It is an amenable number.

3999936312 is an abundant number, since it is smaller than the sum of its proper divisors (6840993528).

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

3999936312 is a wasteful number, since it uses less digits than its factorization.

3999936312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39852 (or 39845 counting only the distinct ones).

The product of its digits is 2125764, while the sum is 54.

The square root of 3999936312 is about 63245.0497035143. The cubic root of 3999936312 is about 1587.3926270570.

The spelling of 3999936312 in words is "three billion, nine hundred ninety-nine million, nine hundred thirty-six thousand, three hundred twelve".