3953860868 has 6 divisors (see below), whose sum is σ = 6919256526. Its totient is φ = 1976930432.

The previous prime is 3953860819. The next prime is 3953860891. The reversal of 3953860868 is 8680683593.

It can be written as a sum of positive squares in only one way, i.e., 3272755264 + 681105604 = 57208^2 + 26098^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494232605 + ... + 494232612.

It is an arithmetic number, because the mean of its divisors is an integer number (1153209421).

Almost surely, 2^3953860868 is an apocalyptic number.

It is an amenable number.

3953860868 is a deficient number, since it is larger than the sum of its proper divisors (2965395658).

3953860868 is a wasteful number, since it uses less digits than its factorization.

3953860868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988465221 (or 988465219 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 56.

The square root of 3953860868 is about 62879.7333645746. The cubic root of 3953860868 is about 1581.2739909018.

The spelling of 3953860868 in words is "three billion, nine hundred fifty-three million, eight hundred sixty thousand, eight hundred sixty-eight".