4639005 has 32 divisors (see below), whose sum is σ = 9427200. Its totient is φ = 2120256.

The previous prime is 4639003. The next prime is 4639049. The reversal of 4639005 is 5009364.

It is a happy number.

It is not a de Polignac number, because 4639005 - 2¹ = 4639003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4639005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4639003) 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 31 ways as a sum of consecutive naturals, for example, 1510 + ... + 3399.

It is an arithmetic number, because the mean of its divisors is an integer number (294600).

Almost surely, 2^4639005 is an apocalyptic number.

4639005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4639005 is an abundant number, since it is smaller than the sum of its proper divisors (4788195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4639005 is a wasteful number, since it uses less digits than its factorization.

4639005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4930 (or 4924 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 4639005 is about 2153.8349518939. The cubic root of 4639005 is about 166.7790952529.

The spelling of 4639005 in words is "four million, six hundred thirty-nine thousand, five".