2397434821 has 2 divisors, whose sum is σ = 2397434822. Its totient is φ = 2397434820.

The previous prime is 2397434759. The next prime is 2397434827. The reversal of 2397434821 is 1284347932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2207684196 + 189750625 = 46986^2 + 13775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2397434821 - 2⁹ = 2397434309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2397434827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1198717410 + 1198717411.

It is an arithmetic number, because the mean of its divisors is an integer number (1198717411).

Almost surely, 2^2397434821 is an apocalyptic number.

It is an amenable number.

2397434821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2397434821 is an equidigital number, since it uses as much as digits as its factorization.

2397434821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

The square root of 2397434821 is about 48963.6071077285. The cubic root of 2397434821 is about 1338.3887258561.

The spelling of 2397434821 in words is "two billion, three hundred ninety-seven million, four hundred thirty-four thousand, eight hundred twenty-one".