4348928621 has 4 divisors (see below), whose sum is σ = 4430983932. Its totient is φ = 4266873312.

The previous prime is 4348928609. The next prime is 4348928641. The reversal of 4348928621 is 1268298434.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2493903721 + 1855024900 = 49939^2 + 43070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4348928621 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 (4348928641) 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, 41027576 + ... + 41027681.

It is an arithmetic number, because the mean of its divisors is an integer number (1107745983).

Almost surely, 2^4348928621 is an apocalyptic number.

It is an amenable number.

4348928621 is a deficient number, since it is larger than the sum of its proper divisors (82055311).

4348928621 is an equidigital number, since it uses as much as digits as its factorization.

4348928621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82055310.

The product of its digits is 663552, while the sum is 47.

The square root of 4348928621 is about 65946.4071879583. The cubic root of 4348928621 is about 1632.2778722606.

The spelling of 4348928621 in words is "four billion, three hundred forty-eight million, nine hundred twenty-eight thousand, six hundred twenty-one".