4628639 has 4 divisors (see below), whose sum is σ = 4644024. Its totient is φ = 4613256.

The previous prime is 4628629. The next prime is 4628651. The reversal of 4628639 is 9368264.

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

It is a cyclic number.

It is not a de Polignac number, because 4628639 - 2¹⁶ = 4563103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4628629) 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, 7232 + ... + 7845.

It is an arithmetic number, because the mean of its divisors is an integer number (1161006).

Almost surely, 2^4628639 is an apocalyptic number.

4628639 is a deficient number, since it is larger than the sum of its proper divisors (15385).

4628639 is a wasteful number, since it uses less digits than its factorization.

4628639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15384.

The product of its digits is 62208, while the sum is 38.

The square root of 4628639 is about 2151.4272007205. The cubic root of 4628639 is about 166.6547782631.

The spelling of 4628639 in words is "four million, six hundred twenty-eight thousand, six hundred thirty-nine".