2398814221 has 2 divisors, whose sum is σ = 2398814222. Its totient is φ = 2398814220.

The previous prime is 2398814207. The next prime is 2398814251. The reversal of 2398814221 is 1224188932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1382798596 + 1016015625 = 37186^2 + 31875^2 .

It is a cyclic number.

It is not a de Polignac number, because 2398814221 - 2⁹ = 2398813709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2398814251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1199407110 + 1199407111.

It is an arithmetic number, because the mean of its divisors is an integer number (1199407111).

Almost surely, 2^2398814221 is an apocalyptic number.

It is an amenable number.

2398814221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2398814221 is an equidigital number, since it uses as much as digits as its factorization.

2398814221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 40.

The square root of 2398814221 is about 48977.6910541932. The cubic root of 2398814221 is about 1338.6453639693.

The spelling of 2398814221 in words is "two billion, three hundred ninety-eight million, eight hundred fourteen thousand, two hundred twenty-one".