3958809975 has 36 divisors (see below), whose sum is σ = 7507773936. Its totient is φ = 1987165440.

The previous prime is 3958809973. The next prime is 3958809989. The reversal of 3958809975 is 5799088593.

It is not a de Polignac number, because 3958809975 - 2¹ = 3958809973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3958809971) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 513667 + ... + 521316.

It is an arithmetic number, because the mean of its divisors is an integer number (208549276).

Almost surely, 2^3958809975 is an apocalyptic number.

3958809975 is a deficient number, since it is larger than the sum of its proper divisors (3548963961).

3958809975 is a wasteful number, since it uses less digits than its factorization.

3958809975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035016 (or 1035008 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 63.

The square root of 3958809975 is about 62919.0748104261. The cubic root of 3958809975 is about 1581.9334839429.

The spelling of 3958809975 in words is "three billion, nine hundred fifty-eight million, eight hundred nine thousand, nine hundred seventy-five".