298109993 has 2 divisors, whose sum is σ = 298109994. Its totient is φ = 298109992.

The previous prime is 298109957. The next prime is 298110017. The reversal of 298109993 is 399901892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295943209 + 2166784 = 17203^2 + 1472^2 .

It is a cyclic number.

It is not a de Polignac number, because 298109993 - 2⁸ = 298109737 is a prime.

It is not a weakly prime, because it can be changed into another prime (298109293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149054996 + 149054997.

It is an arithmetic number, because the mean of its divisors is an integer number (149054997).

Almost surely, 2^298109993 is an apocalyptic number.

It is an amenable number.

298109993 is a deficient number, since it is larger than the sum of its proper divisors (1).

298109993 is an equidigital number, since it uses as much as digits as its factorization.

298109993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 298109993 is about 17265.8620694132. The cubic root of 298109993 is about 668.0241730827.

The spelling of 298109993 in words is "two hundred ninety-eight million, one hundred nine thousand, nine hundred ninety-three".