298420621 has 2 divisors, whose sum is σ = 298420622. Its totient is φ = 298420620.

The previous prime is 298420609. The next prime is 298420679. The reversal of 298420621 is 126024892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215355625 + 83064996 = 14675^2 + 9114^2 .

It is a cyclic number.

It is not a de Polignac number, because 298420621 - 2⁵ = 298420589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298420691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149210310 + 149210311.

It is an arithmetic number, because the mean of its divisors is an integer number (149210311).

Almost surely, 2^298420621 is an apocalyptic number.

It is an amenable number.

298420621 is a deficient number, since it is larger than the sum of its proper divisors (1).

298420621 is an equidigital number, since it uses as much as digits as its factorization.

298420621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 298420621 is about 17274.8551658183. The cubic root of 298420621 is about 668.2561176512.

The spelling of 298420621 in words is "two hundred ninety-eight million, four hundred twenty thousand, six hundred twenty-one".