3967936213 has 4 divisors (see below), whose sum is σ = 4042802988. Its totient is φ = 3893069440.

The previous prime is 3967936211. The next prime is 3967936229. The reversal of 3967936213 is 3126397693.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3526221924 + 441714289 = 59382^2 + 21017^2 .

It is a cyclic number.

It is not a de Polignac number, because 3967936213 - 2¹ = 3967936211 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967936211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37433308 + ... + 37433413.

It is an arithmetic number, because the mean of its divisors is an integer number (1010700747).

Almost surely, 2^3967936213 is an apocalyptic number.

It is an amenable number.

3967936213 is a deficient number, since it is larger than the sum of its proper divisors (74866775).

3967936213 is an equidigital number, since it uses as much as digits as its factorization.

3967936213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74866774.

The product of its digits is 1102248, while the sum is 49.

The square root of 3967936213 is about 62991.5566802409. The cubic root of 3967936213 is about 1583.1481605595.

The spelling of 3967936213 in words is "three billion, nine hundred sixty-seven million, nine hundred thirty-six thousand, two hundred thirteen".