4998139 has 4 divisors (see below), whose sum is σ = 5014224. Its totient is φ = 4982056.

The previous prime is 4998137. The next prime is 4998181. The reversal of 4998139 is 9318994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9318994 = 2 ⋅4659497.

It is a cyclic number.

It is not a de Polignac number, because 4998139 - 2¹ = 4998137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4998095 and 4998104.

It is not an unprimeable number, because it can be changed into a prime (4998131) 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, 7567 + ... + 8200.

It is an arithmetic number, because the mean of its divisors is an integer number (1253556).

Almost surely, 2^4998139 is an apocalyptic number.

4998139 is a deficient number, since it is larger than the sum of its proper divisors (16085).

4998139 is a wasteful number, since it uses less digits than its factorization.

4998139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16084.

The product of its digits is 69984, while the sum is 43.

The square root of 4998139 is about 2235.6518065209. The cubic root of 4998139 is about 170.9763769335.

The spelling of 4998139 in words is "four million, nine hundred ninety-eight thousand, one hundred thirty-nine".