4864640421 has 4 divisors (see below), whose sum is σ = 6486187232. Its totient is φ = 3243093612.

The previous prime is 4864640419. The next prime is 4864640437. The reversal of 4864640421 is 1240464684.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4864640421 - 2¹ = 4864640419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4864640421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4864640401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810773401 + ... + 810773406.

It is an arithmetic number, because the mean of its divisors is an integer number (1621546808).

Almost surely, 2^4864640421 is an apocalyptic number.

It is an amenable number.

4864640421 is a deficient number, since it is larger than the sum of its proper divisors (1621546811).

4864640421 is a wasteful number, since it uses less digits than its factorization.

4864640421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621546810.

The product of its (nonzero) digits is 147456, while the sum is 39.

The square root of 4864640421 is about 69746.9742784588. The cubic root of 4864640421 is about 1694.4037920169.

The spelling of 4864640421 in words is "four billion, eight hundred sixty-four million, six hundred forty thousand, four hundred twenty-one".