4859621 has 8 divisors (see below), whose sum is σ = 5268984. Its totient is φ = 4455360.

The previous prime is 4859597. The next prime is 4859627. The reversal of 4859621 is 1269584.

It can be written as a sum of positive squares in 4 ways, for example, as 390625 + 4468996 = 625^2 + 2114^2 .

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

It is not a de Polignac number, because 4859621 - 2⁶ = 4859557 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4859627) 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, 851 + ... + 3231.

It is an arithmetic number, because the mean of its divisors is an integer number (658623).

Almost surely, 2^4859621 is an apocalyptic number.

It is an amenable number.

4859621 is a deficient number, since it is larger than the sum of its proper divisors (409363).

4859621 is a wasteful number, since it uses less digits than its factorization.

4859621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551.

The product of its digits is 17280, while the sum is 35.

The square root of 4859621 is about 2204.4548078833. The cubic root of 4859621 is about 169.3820819649.

The spelling of 4859621 in words is "four million, eight hundred fifty-nine thousand, six hundred twenty-one".