3994385253 has 16 divisors (see below), whose sum is σ = 5370908160. Its totient is φ = 2640469104.

The previous prime is 3994385243. The next prime is 3994385261. The reversal of 3994385253 is 3525834993.

It is not a de Polignac number, because 3994385253 - 2¹⁶ = 3994319717 is a prime.

It is a super-2 number, since 2×3994385253² = 31910227098767748018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3994385196 and 3994385205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994385203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207408 + ... + 225846.

It is an arithmetic number, because the mean of its divisors is an integer number (335681760).

Almost surely, 2^3994385253 is an apocalyptic number.

It is an amenable number.

3994385253 is a deficient number, since it is larger than the sum of its proper divisors (1376522907).

3994385253 is a wasteful number, since it uses less digits than its factorization.

3994385253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19048.

The product of its digits is 3499200, while the sum is 51.

The square root of 3994385253 is about 63201.1491430338. The cubic root of 3994385253 is about 1586.6579662319.

The spelling of 3994385253 in words is "three billion, nine hundred ninety-four million, three hundred eighty-five thousand, two hundred fifty-three".