3959548638 has 16 divisors (see below), whose sum is σ = 7919876496. Its totient is φ = 1319719680.

The previous prime is 3959548631. The next prime is 3959548657. The reversal of 3959548638 is 8368459593.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3959548631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49518 + ... + 101838.

It is an arithmetic number, because the mean of its divisors is an integer number (494992281).

Almost surely, 2^3959548638 is an apocalyptic number.

3959548638 is an abundant number, since it is smaller than the sum of its proper divisors (3960327858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3959548638 is a wasteful number, since it uses less digits than its factorization.

3959548638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64939.

The product of its digits is 27993600, while the sum is 60.

The square root of 3959548638 is about 62924.9444815011. The cubic root of 3959548638 is about 1582.0318673014.

The spelling of 3959548638 in words is "three billion, nine hundred fifty-nine million, five hundred forty-eight thousand, six hundred thirty-eight".