298407639 has 4 divisors (see below), whose sum is σ = 397876856. Its totient is φ = 198938424.

The previous prime is 298407623. The next prime is 298407671. The reversal of 298407639 is 936704892.

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

It is not a de Polignac number, because 298407639 - 2⁴ = 298407623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298407679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49734604 + ... + 49734609.

It is an arithmetic number, because the mean of its divisors is an integer number (99469214).

Almost surely, 2^298407639 is an apocalyptic number.

298407639 is a deficient number, since it is larger than the sum of its proper divisors (99469217).

298407639 is an equidigital number, since it uses as much as digits as its factorization.

298407639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99469216.

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 298407639 is about 17274.4794132848. The cubic root of 298407639 is about 668.2464272722.

The spelling of 298407639 in words is "two hundred ninety-eight million, four hundred seven thousand, six hundred thirty-nine".