946771993 has 2 divisors, whose sum is σ = 946771994. Its totient is φ = 946771992.

The previous prime is 946771933. The next prime is 946772003. The reversal of 946771993 is 399177649.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 904625929 + 42146064 = 30077^2 + 6492^2 .

It is a cyclic number.

It is not a de Polignac number, because 946771993 - 2⁹ = 946771481 is a prime.

It is not a weakly prime, because it can be changed into another prime (946771933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473385996 + 473385997.

It is an arithmetic number, because the mean of its divisors is an integer number (473385997).

Almost surely, 2^946771993 is an apocalyptic number.

It is an amenable number.

946771993 is a deficient number, since it is larger than the sum of its proper divisors (1).

946771993 is an equidigital number, since it uses as much as digits as its factorization.

946771993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2571912, while the sum is 55.

The square root of 946771993 is about 30769.6602678678. The cubic root of 946771993 is about 981.9328758545.

The spelling of 946771993 in words is "nine hundred forty-six million, seven hundred seventy-one thousand, nine hundred ninety-three".