3953913399 has 24 divisors (see below), whose sum is σ = 5985022320. Its totient is φ = 2579819472.

The previous prime is 3953913349. The next prime is 3953913409. The reversal of 3953913399 is 9933193593.

It is a happy number.

3953913399 is a `hidden beast` number, since 3 + 9 + 539 + 13 + 3 + 99 = 666.

It is not a de Polignac number, because 3953913399 - 2¹⁵ = 3953880631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3953913349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26497 + ... + 92789.

It is an arithmetic number, because the mean of its divisors is an integer number (249375930).

Almost surely, 2^3953913399 is an apocalyptic number.

3953913399 is a deficient number, since it is larger than the sum of its proper divisors (2031108921).

3953913399 is an equidigital number, since it uses as much as digits as its factorization.

3953913399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66396 (or 66343 counting only the distinct ones).

The product of its digits is 2657205, while the sum is 54.

The square root of 3953913399 is about 62880.1510732918. The cubic root of 3953913399 is about 1581.2809938068.

The spelling of 3953913399 in words is "three billion, nine hundred fifty-three million, nine hundred thirteen thousand, three hundred ninety-nine".