4348421872369 has 3 divisors (see below), whose sum is σ = 4348423957657. Its totient is φ = 4348419787082.

The previous prime is 4348421872363. The next prime is 4348421872409. The reversal of 4348421872369 is 9632781248434.

The square root of 4348421872369 is 2085287.

It is a perfect power (a square), and thus also a powerful number.

4348421872369 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 4348421872369 - 2¹¹ = 4348421870321 is a prime.

It is a super-2 number, since 2×4348421872369² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4348421872363) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1042644 + ... + 3127930.

Almost surely, 2^{4348421872369} is an apocalyptic number.

4348421872369 is the 2085287-th square number.

4348421872369 is the 1042644-th centered octagonal number.

It is an amenable number.

4348421872369 is a deficient number, since it is larger than the sum of its proper divisors (2085288).

4348421872369 is an frugal number, since it uses more digits than its factorization.

4348421872369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170574 (or 2085287 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 61.

The spelling of 4348421872369 in words is "four trillion, three hundred forty-eight billion, four hundred twenty-one million, eight hundred seventy-two thousand, three hundred sixty-nine".