498139 has 4 divisors (see below), whose sum is σ = 514240. Its totient is φ = 482040.

The previous prime is 498119. The next prime is 498143. The reversal of 498139 is 931894.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931894 = 2 ⋅465947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-498139 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (498119) 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 in 3 ways as a sum of consecutive naturals, for example, 8004 + ... + 8065.

It is an arithmetic number, because the mean of its divisors is an integer number (128560).

2⁴⁹⁸¹³⁹ is an apocalyptic number.

498139 is a deficient number, since it is larger than the sum of its proper divisors (16101).

498139 is a wasteful number, since it uses less digits than its factorization.

498139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16100.

The product of its digits is 7776, while the sum is 34.

The square root of 498139 is about 705.7896287138. The cubic root of 498139 is about 79.2714583959.

The spelling of 498139 in words is "four hundred ninety-eight thousand, one hundred thirty-nine".