298779 has 16 divisors (see below), whose sum is σ = 440832. Its totient is φ = 178848.

The previous prime is 298777. The next prime is 298799. The reversal of 298779 is 977892.

It is not a de Polignac number, because 298779 - 2¹ = 298777 is a prime.

298779 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 298779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1752 + ... + 1914.

It is an arithmetic number, because the mean of its divisors is an integer number (27552).

2²⁹⁸⁷⁷⁹ is an apocalyptic number.

298779 is a deficient number, since it is larger than the sum of its proper divisors (142053).

298779 is a wasteful number, since it uses less digits than its factorization.

298779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226.

The product of its digits is 63504, while the sum is 42.

The square root of 298779 is about 546.6068056656. The cubic root of 298779 is about 66.8523517799.

The spelling of 298779 in words is "two hundred ninety-eight thousand, seven hundred seventy-nine".