4639913 has 8 divisors (see below), whose sum is σ = 4830600. Its totient is φ = 4451328.

The previous prime is 4639909. The next prime is 4639927. The reversal of 4639913 is 3199364.

It can be written as a sum of positive squares in 4 ways, for example, as 425104 + 4214809 = 652^2 + 2053^2 .

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 4639913 - 2² = 4639909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4639903) 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 7 ways as a sum of consecutive naturals, for example, 5183 + ... + 6011.

It is an arithmetic number, because the mean of its divisors is an integer number (603825).

Almost surely, 2^4639913 is an apocalyptic number.

It is an amenable number.

4639913 is a deficient number, since it is larger than the sum of its proper divisors (190687).

4639913 is a wasteful number, since it uses less digits than its factorization.

4639913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its digits is 17496, while the sum is 35.

The square root of 4639913 is about 2154.0457283911. The cubic root of 4639913 is about 166.7899758577.

The spelling of 4639913 in words is "four million, six hundred thirty-nine thousand, nine hundred thirteen".