2973248921 has 2 divisors, whose sum is σ = 2973248922. Its totient is φ = 2973248920.

The previous prime is 2973248909. The next prime is 2973248963. The reversal of 2973248921 is 1298423792.

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., 2272905625 + 700343296 = 47675^2 + 26464^2 .

It is a cyclic number.

It is not a de Polignac number, because 2973248921 - 2⁶ = 2973248857 is a prime.

It is not a weakly prime, because it can be changed into another prime (2973248981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1486624460 + 1486624461.

It is an arithmetic number, because the mean of its divisors is an integer number (1486624461).

Almost surely, 2^2973248921 is an apocalyptic number.

It is an amenable number.

2973248921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2973248921 is an equidigital number, since it uses as much as digits as its factorization.

2973248921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 2973248921 is about 54527.5060955478. The cubic root of 2973248921 is about 1437.9499056625.

The spelling of 2973248921 in words is "two billion, nine hundred seventy-three million, two hundred forty-eight thousand, nine hundred twenty-one".