3946401213 has 16 divisors (see below), whose sum is σ = 5543248320. Its totient is φ = 2490466176.

The previous prime is 3946401209. The next prime is 3946401227. The reversal of 3946401213 is 3121046493.

3946401213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3946401213 - 2² = 3946401209 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946481213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45681 + ... + 99897.

It is an arithmetic number, because the mean of its divisors is an integer number (346453020).

Almost surely, 2^3946401213 is an apocalyptic number.

It is an amenable number.

3946401213 is a deficient number, since it is larger than the sum of its proper divisors (1596847107).

3946401213 is a wasteful number, since it uses less digits than its factorization.

3946401213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55516.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 3946401213 is about 62820.3885136028. The cubic root of 3946401213 is about 1580.2789142016.

The spelling of 3946401213 in words is "three billion, nine hundred forty-six million, four hundred one thousand, two hundred thirteen".