4639145 has 8 divisors (see below), whose sum is σ = 6362304. Its totient is φ = 3181104.

The previous prime is 4639139. The next prime is 4639189. The reversal of 4639145 is 5419364.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4639145 - 2⁶ = 4639081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 66239 + ... + 66308.

It is an arithmetic number, because the mean of its divisors is an integer number (795288).

Almost surely, 2^4639145 is an apocalyptic number.

It is an amenable number.

4639145 is a deficient number, since it is larger than the sum of its proper divisors (1723159).

4639145 is a wasteful number, since it uses less digits than its factorization.

4639145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132559.

The product of its digits is 12960, while the sum is 32.

The square root of 4639145 is about 2153.8674518178. The cubic root of 4639145 is about 166.7807729718.

The spelling of 4639145 in words is "four million, six hundred thirty-nine thousand, one hundred forty-five".