3973846993 has 2 divisors, whose sum is σ = 3973846994. Its totient is φ = 3973846992.

The previous prime is 3973846967. The next prime is 3973847023. The reversal of 3973846993 is 3996483793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3488437969 + 485409024 = 59063^2 + 22032^2 .

It is a cyclic number.

It is not a de Polignac number, because 3973846993 - 2¹³ = 3973838801 is a prime.

It is not a weakly prime, because it can be changed into another prime (3973846913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986923496 + 1986923497.

It is an arithmetic number, because the mean of its divisors is an integer number (1986923497).

Almost surely, 2^3973846993 is an apocalyptic number.

It is an amenable number.

3973846993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3973846993 is an equidigital number, since it uses as much as digits as its factorization.

3973846993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26453952, while the sum is 61.

The square root of 3973846993 is about 63038.4564611159. The cubic root of 3973846993 is about 1583.9338752931.

The spelling of 3973846993 in words is "three billion, nine hundred seventy-three million, eight hundred forty-six thousand, nine hundred ninety-three".