4623427421 has 2 divisors, whose sum is σ = 4623427422. Its totient is φ = 4623427420.

The previous prime is 4623427397. The next prime is 4623427439. The reversal of 4623427421 is 1247243264.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4226820196 + 396607225 = 65014^2 + 19915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4623427421 is a prime.

It is a super-2 number, since 2×4623427421² = 42752162234509422482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4623427441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2311713710 + 2311713711.

It is an arithmetic number, because the mean of its divisors is an integer number (2311713711).

Almost surely, 2^4623427421 is an apocalyptic number.

It is an amenable number.

4623427421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4623427421 is an equidigital number, since it uses as much as digits as its factorization.

4623427421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 35.

The square root of 4623427421 is about 67995.7897299531. The cubic root of 4623427421 is about 1665.9220690253.

The spelling of 4623427421 in words is "four billion, six hundred twenty-three million, four hundred twenty-seven thousand, four hundred twenty-one".