298870091 has 4 divisors (see below), whose sum is σ = 321860112. Its totient is φ = 275880072.

The previous prime is 298870063. The next prime is 298870093. The reversal of 298870091 is 190078892.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 298870091 - 2¹⁴ = 298853707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (298870093) 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 3 ways as a sum of consecutive naturals, for example, 11494991 + ... + 11495016.

It is an arithmetic number, because the mean of its divisors is an integer number (80465028).

Almost surely, 2^298870091 is an apocalyptic number.

298870091 is a deficient number, since it is larger than the sum of its proper divisors (22990021).

298870091 is a wasteful number, since it uses less digits than its factorization.

298870091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22990020.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 298870091 is about 17287.8596419568. The cubic root of 298870091 is about 668.5914501590.

The spelling of 298870091 in words is "two hundred ninety-eight million, eight hundred seventy thousand, ninety-one".