3990052843 has 4 divisors (see below), whose sum is σ = 4560060400. Its totient is φ = 3420045288.

The previous prime is 3990052799. The next prime is 3990052897. The reversal of 3990052843 is 3482500993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3990052843 - 2¹³ = 3990044651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3990052843.

It is not an unprimeable number, because it can be changed into a prime (3990055843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285003768 + ... + 285003781.

It is an arithmetic number, because the mean of its divisors is an integer number (1140015100).

Almost surely, 2^3990052843 is an apocalyptic number.

3990052843 is a deficient number, since it is larger than the sum of its proper divisors (570007557).

3990052843 is an equidigital number, since it uses as much as digits as its factorization.

3990052843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570007556.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 3990052843 is about 63166.8650718080. The cubic root of 3990052843 is about 1586.0841157594.

The spelling of 3990052843 in words is "three billion, nine hundred ninety million, fifty-two thousand, eight hundred forty-three".