298252921 has 4 divisors (see below), whose sum is σ = 298288000. Its totient is φ = 298217844.

The previous prime is 298252919. The next prime is 298252987. The reversal of 298252921 is 129252892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 298252921 - 2¹ = 298252919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (298252621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4180 + ... + 24778.

It is an arithmetic number, because the mean of its divisors is an integer number (74572000).

Almost surely, 2^298252921 is an apocalyptic number.

It is an amenable number.

298252921 is a deficient number, since it is larger than the sum of its proper divisors (35079).

298252921 is a wasteful number, since it uses less digits than its factorization.

298252921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35078.

The product of its digits is 51840, while the sum is 40.

The square root of 298252921 is about 17270.0006079907. Note that the first 3 decimals coincide. The cubic root of 298252921 is about 668.1309167972.

The spelling of 298252921 in words is "two hundred ninety-eight million, two hundred fifty-two thousand, nine hundred twenty-one".