4640430421 has 8 divisors (see below), whose sum is σ = 5064091488. Its totient is φ = 4217070000.

The previous prime is 4640430413. The next prime is 4640430437. The reversal of 4640430421 is 1240340464.

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

It is not a de Polignac number, because 4640430421 - 2³ = 4640430413 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 4640430421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640437421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42255 + ... + 105196.

It is an arithmetic number, because the mean of its divisors is an integer number (633011436).

Almost surely, 2^4640430421 is an apocalyptic number.

It is an amenable number.

4640430421 is a deficient number, since it is larger than the sum of its proper divisors (423661067).

4640430421 is a wasteful number, since it uses less digits than its factorization.

4640430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150323.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 4640430421 is about 68120.7047893664. The cubic root of 4640430421 is about 1667.9617550181.

Adding to 4640430421 its reverse (1240340464), we get a palindrome (5880770885).

The spelling of 4640430421 in words is "four billion, six hundred forty million, four hundred thirty thousand, four hundred twenty-one".