298818397 has 2 divisors, whose sum is σ = 298818398. Its totient is φ = 298818396.

The previous prime is 298818361. The next prime is 298818431. The reversal of 298818397 is 793818892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282609721 + 16208676 = 16811^2 + 4026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-298818397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298818307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149409198 + 149409199.

It is an arithmetic number, because the mean of its divisors is an integer number (149409199).

Almost surely, 2^298818397 is an apocalyptic number.

It is an amenable number.

298818397 is a deficient number, since it is larger than the sum of its proper divisors (1).

298818397 is an equidigital number, since it uses as much as digits as its factorization.

298818397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 55.

The square root of 298818397 is about 17286.3644818684. The cubic root of 298818397 is about 668.5529003450.

The spelling of 298818397 in words is "two hundred ninety-eight million, eight hundred eighteen thousand, three hundred ninety-seven".