298513639 has 2 divisors, whose sum is σ = 298513640. Its totient is φ = 298513638.

The previous prime is 298513597. The next prime is 298513643. The reversal of 298513639 is 936315892.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 298513639 - 2²⁵ = 264959207 is a prime.

It is a super-2 number, since 2×298513639² = 178220785338044642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298514639) 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 as a sum of consecutive naturals, namely, 149256819 + 149256820.

It is an arithmetic number, because the mean of its divisors is an integer number (149256820).

Almost surely, 2^298513639 is an apocalyptic number.

298513639 is a deficient number, since it is larger than the sum of its proper divisors (1).

298513639 is an equidigital number, since it uses as much as digits as its factorization.

298513639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 298513639 is about 17277.5472506950. The cubic root of 298513639 is about 668.3255424673.

The spelling of 298513639 in words is "two hundred ninety-eight million, five hundred thirteen thousand, six hundred thirty-nine".