2971993 has 2 divisors, whose sum is σ = 2971994. Its totient is φ = 2971992.

The previous prime is 2971987. The next prime is 2972027. The reversal of 2971993 is 3991792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1710864 + 1261129 = 1308^2 + 1123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2971993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2971963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1485996 + 1485997.

It is an arithmetic number, because the mean of its divisors is an integer number (1485997).

2^2971993 is an apocalyptic number.

It is an amenable number.

2971993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2971993 is an equidigital number, since it uses as much as digits as its factorization.

2971993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 40.

The square root of 2971993 is about 1723.9469249371. The cubic root of 2971993 is about 143.7747410471.

The spelling of 2971993 in words is "two million, nine hundred seventy-one thousand, nine hundred ninety-three".