4344000421 has 2 divisors, whose sum is σ = 4344000422. Its totient is φ = 4344000420.

The previous prime is 4344000379. The next prime is 4344000431. The reversal of 4344000421 is 1240004434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2977884900 + 1366115521 = 54570^2 + 36961^2 .

It is a cyclic number.

It is not a de Polignac number, because 4344000421 - 2¹⁷ = 4343869349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4344000392 and 4344000401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4344000431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2172000210 + 2172000211.

It is an arithmetic number, because the mean of its divisors is an integer number (2172000211).

Almost surely, 2^4344000421 is an apocalyptic number.

It is an amenable number.

4344000421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4344000421 is an equidigital number, since it uses as much as digits as its factorization.

4344000421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4344000421 is about 65909.0314069324. The cubic root of 4344000421 is about 1631.6610741952.

Adding to 4344000421 its reverse (1240004434), we get a palindrome (5584004855).

The spelling of 4344000421 in words is "four billion, three hundred forty-four million, four hundred twenty-one", and thus it is an aban number.