298890005 has 8 divisors (see below), whose sum is σ = 379766232. Its totient is φ = 225046528.

The previous prime is 298890001. The next prime is 298890013. The reversal of 298890005 is 500098892.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17422276 + 281467729 = 4174^2 + 16777^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 298890005 - 2² = 298890001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298890001) 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 in 7 ways as a sum of consecutive naturals, for example, 1758092 + ... + 1758261.

It is an arithmetic number, because the mean of its divisors is an integer number (47470779).

Almost surely, 2^298890005 is an apocalyptic number.

It is an amenable number.

298890005 is a deficient number, since it is larger than the sum of its proper divisors (80876227).

298890005 is a wasteful number, since it uses less digits than its factorization.

298890005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516375.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 298890005 is about 17288.4355856740. The cubic root of 298890005 is about 668.6062994585.

The spelling of 298890005 in words is "two hundred ninety-eight million, eight hundred ninety thousand, five".