489845739 has 4 divisors (see below), whose sum is σ = 653127656. Its totient is φ = 326563824.

The previous prime is 489845717. The next prime is 489845747. The reversal of 489845739 is 937548984.

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

It is not a de Polignac number, because 489845739 - 2¹¹ = 489843691 is a prime.

It is a super-2 number, since 2×489845739² = 479897696032912242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489845749) 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, 81640954 + ... + 81640959.

It is an arithmetic number, because the mean of its divisors is an integer number (163281914).

Almost surely, 2^489845739 is an apocalyptic number.

489845739 is a deficient number, since it is larger than the sum of its proper divisors (163281917).

489845739 is a wasteful number, since it uses less digits than its factorization.

489845739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163281916.

The product of its digits is 8709120, while the sum is 57.

The square root of 489845739 is about 22132.4589460819. The cubic root of 489845739 is about 788.2907761395.

The spelling of 489845739 in words is "four hundred eighty-nine million, eight hundred forty-five thousand, seven hundred thirty-nine".