4498639 has 4 divisors (see below), whose sum is σ = 4694256. Its totient is φ = 4303024.

The previous prime is 4498633. The next prime is 4498651. The reversal of 4498639 is 9368944.

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

It is not a de Polignac number, because 4498639 - 2¹⁷ = 4367567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4498595 and 4498604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4498633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97774 + ... + 97819.

It is an arithmetic number, because the mean of its divisors is an integer number (1173564).

Almost surely, 2^4498639 is an apocalyptic number.

4498639 is a deficient number, since it is larger than the sum of its proper divisors (195617).

4498639 is a wasteful number, since it uses less digits than its factorization.

4498639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195616.

The product of its digits is 186624, while the sum is 43.

The square root of 4498639 is about 2120.9995285242. Note that the first 3 decimals coincide. The cubic root of 4498639 is about 165.0797166073.

The spelling of 4498639 in words is "four million, four hundred ninety-eight thousand, six hundred thirty-nine".