3999870452 has 12 divisors (see below), whose sum is σ = 7032949056. Its totient is φ = 1990456440.

The previous prime is 3999870451. The next prime is 3999870473. The reversal of 3999870452 is 2540789993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999870451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2368748 + ... + 2370435.

It is an arithmetic number, because the mean of its divisors is an integer number (586079088).

Almost surely, 2^3999870452 is an apocalyptic number.

It is an amenable number.

3999870452 is a deficient number, since it is larger than the sum of its proper divisors (3033078604).

3999870452 is a wasteful number, since it uses less digits than its factorization.

3999870452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739398 (or 4739396 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 56.

The square root of 3999870452 is about 63244.5290282092. The cubic root of 3999870452 is about 1587.3839147306.

The spelling of 3999870452 in words is "three billion, nine hundred ninety-nine million, eight hundred seventy thousand, four hundred fifty-two".