3949967043193 has 2 divisors, whose sum is σ = 3949967043194. Its totient is φ = 3949967043192.

The previous prime is 3949967043173. The next prime is 3949967043317. The reversal of 3949967043193 is 3913407699493.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3793663839289 + 156303203904 = 1947733^2 + 395352^2 .

It is an emirp because it is prime and its reverse (3913407699493) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3949967043193 is a prime.

It is a super-2 number, since 2×3949967043193² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3949967043133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974983521596 + 1974983521597.

It is an arithmetic number, because the mean of its divisors is an integer number (1974983521597).

Almost surely, 2^{3949967043193} is an apocalyptic number.

It is an amenable number.

3949967043193 is a deficient number, since it is larger than the sum of its proper divisors (1).

3949967043193 is an equidigital number, since it uses as much as digits as its factorization.

3949967043193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119042784, while the sum is 67.

The spelling of 3949967043193 in words is "three trillion, nine hundred forty-nine billion, nine hundred sixty-seven million, forty-three thousand, one hundred ninety-three".