298598391 has 48 divisors (see below), whose sum is σ = 532686336. Its totient is φ = 156955968.

The previous prime is 298598383. The next prime is 298598411. The reversal of 298598391 is 193895892.

It is not a de Polignac number, because 298598391 - 2³ = 298598383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298598371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 362406 + ... + 363228.

It is an arithmetic number, because the mean of its divisors is an integer number (11097632).

Almost surely, 2^298598391 is an apocalyptic number.

298598391 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

298598391 is a deficient number, since it is larger than the sum of its proper divisors (234087945).

298598391 is a wasteful number, since it uses less digits than its factorization.

298598391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292 (or 1289 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 298598391 is about 17279.9997395833. Note that the first 3 decimals coincide. The cubic root of 298598391 is about 668.3887853250.

The spelling of 298598391 in words is "two hundred ninety-eight million, five hundred ninety-eight thousand, three hundred ninety-one".