3953867471999 has 4 divisors (see below), whose sum is σ = 4060728755064. Its totient is φ = 3847006188936.

The previous prime is 3953867471971. The next prime is 3953867472013. The reversal of 3953867471999 is 9991747683593.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3953867471999 - 2³⁶ = 3885147995263 is a prime.

It is a super-2 number, since 2×3953867471999² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3953867471909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53430641477 + ... + 53430641550.

It is an arithmetic number, because the mean of its divisors is an integer number (1015182188766).

Almost surely, 2^{3953867471999} is an apocalyptic number.

3953867471999 is a deficient number, since it is larger than the sum of its proper divisors (106861283065).

3953867471999 is a wasteful number, since it uses less digits than its factorization.

3953867471999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106861283064.

The product of its digits is 2777664960, while the sum is 80.

The spelling of 3953867471999 in words is "three trillion, nine hundred fifty-three billion, eight hundred sixty-seven million, four hundred seventy-one thousand, nine hundred ninety-nine".