3889139825 has 12 divisors (see below), whose sum is σ = 4872253260. Its totient is φ = 3079234560.

The previous prime is 3889139791. The next prime is 3889139857. The reversal of 3889139825 is 5289319883.

It can be written as a sum of positive squares in 6 ways, for example, as 641963569 + 3247176256 = 25337^2 + 56984^2 .

It is not a de Polignac number, because 3889139825 - 2¹⁰ = 3889138801 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 799460 + ... + 804309.

It is an arithmetic number, because the mean of its divisors is an integer number (406021105).

Almost surely, 2^3889139825 is an apocalyptic number.

It is an amenable number.

3889139825 is a deficient number, since it is larger than the sum of its proper divisors (983113435).

3889139825 is a wasteful number, since it uses less digits than its factorization.

3889139825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603876 (or 1603871 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 56.

The square root of 3889139825 is about 62362.9683786781. The cubic root of 3889139825 is about 1572.5984833718.

The spelling of 3889139825 in words is "three billion, eight hundred eighty-nine million, one hundred thirty-nine thousand, eight hundred twenty-five".