298857009 has 32 divisors (see below), whose sum is σ = 464200704. Its totient is φ = 169202880.

The previous prime is 298856989. The next prime is 298857011. The reversal of 298857009 is 900758892.

It is a happy number.

It is not a de Polignac number, because 298857009 - 2¹² = 298852913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (298857049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28059 + ... + 37215.

It is an arithmetic number, because the mean of its divisors is an integer number (14506272).

Almost surely, 2^298857009 is an apocalyptic number.

It is an amenable number.

298857009 is a deficient number, since it is larger than the sum of its proper divisors (165343695).

298857009 is a wasteful number, since it uses less digits than its factorization.

298857009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9237.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 298857009 is about 17287.4812798163. The cubic root of 298857009 is about 668.5816949273.

The spelling of 298857009 in words is "two hundred ninety-eight million, eight hundred fifty-seven thousand, nine".