298797409 has 2 divisors, whose sum is σ = 298797410. Its totient is φ = 298797408.

The previous prime is 298797403. The next prime is 298797413. The reversal of 298797409 is 904797892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218300625 + 80496784 = 14775^2 + 8972^2 .

It is a cyclic number.

It is not a de Polignac number, because 298797409 - 2⁷ = 298797281 is a prime.

It is a super-2 number, since 2×298797409² = 178559783250226562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 298797409.

It is not a weakly prime, because it can be changed into another prime (298797403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149398704 + 149398705.

It is an arithmetic number, because the mean of its divisors is an integer number (149398705).

Almost surely, 2^298797409 is an apocalyptic number.

It is an amenable number.

298797409 is a deficient number, since it is larger than the sum of its proper divisors (1).

298797409 is an equidigital number, since it uses as much as digits as its factorization.

298797409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 298797409 is about 17285.7574031339. The cubic root of 298797409 is about 668.5372476755.

The spelling of 298797409 in words is "two hundred ninety-eight million, seven hundred ninety-seven thousand, four hundred nine".