298608139 has 2 divisors, whose sum is σ = 298608140. Its totient is φ = 298608138.

The previous prime is 298608119. The next prime is 298608169. The reversal of 298608139 is 931806892.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 298608139 - 2¹⁵ = 298575371 is a prime.

It is not a weakly prime, because it can be changed into another prime (298608109) 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 as a sum of consecutive naturals, namely, 149304069 + 149304070.

It is an arithmetic number, because the mean of its divisors is an integer number (149304070).

Almost surely, 2^298608139 is an apocalyptic number.

298608139 is a deficient number, since it is larger than the sum of its proper divisors (1).

298608139 is an equidigital number, since it uses as much as digits as its factorization.

298608139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 298608139 is about 17280.2817974708. The cubic root of 298608139 is about 668.3960586205.

The spelling of 298608139 in words is "two hundred ninety-eight million, six hundred eight thousand, one hundred thirty-nine".