3920143639 has 2 divisors, whose sum is σ = 3920143640. Its totient is φ = 3920143638.

The previous prime is 3920143637. The next prime is 3920143649. The reversal of 3920143639 is 9363410293.

3920143639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3920143639 - 2¹ = 3920143637 is a prime.

Together with 3920143637, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3920143637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960071819 + 1960071820.

It is an arithmetic number, because the mean of its divisors is an integer number (1960071820).

Almost surely, 2^3920143639 is an apocalyptic number.

3920143639 is a deficient number, since it is larger than the sum of its proper divisors (1).

3920143639 is an equidigital number, since it uses as much as digits as its factorization.

3920143639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 3920143639 is about 62611.0504543727. The cubic root of 3920143639 is about 1576.7662910905.

The spelling of 3920143639 in words is "three billion, nine hundred twenty million, one hundred forty-three thousand, six hundred thirty-nine".