2004720397 has 2 divisors, whose sum is σ = 2004720398. Its totient is φ = 2004720396.

The previous prime is 2004720373. The next prime is 2004720451. The reversal of 2004720397 is 7930274002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1241082441 + 763637956 = 35229^2 + 27634^2 .

It is a cyclic number.

It is not a de Polignac number, because 2004720397 - 2⁷ = 2004720269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2004720097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002360198 + 1002360199.

It is an arithmetic number, because the mean of its divisors is an integer number (1002360199).

Almost surely, 2^2004720397 is an apocalyptic number.

It is an amenable number.

2004720397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004720397 is an equidigital number, since it uses as much as digits as its factorization.

2004720397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 2004720397 is about 44774.1040893059. The cubic root of 2004720397 is about 1260.9114923468.

Adding to 2004720397 its reverse (7930274002), we get a palindrome (9934994399).

The spelling of 2004720397 in words is "two billion, four million, seven hundred twenty thousand, three hundred ninety-seven".