4376505421 has 2 divisors, whose sum is σ = 4376505422. Its totient is φ = 4376505420.

The previous prime is 4376505403. The next prime is 4376505473. The reversal of 4376505421 is 1245056734.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4174581321 + 201924100 = 64611^2 + 14210^2 .

It is a cyclic number.

It is not a de Polignac number, because 4376505421 - 2¹⁹ = 4375981133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4376502421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2188252710 + 2188252711.

It is an arithmetic number, because the mean of its divisors is an integer number (2188252711).

Almost surely, 2^4376505421 is an apocalyptic number.

It is an amenable number.

4376505421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4376505421 is an equidigital number, since it uses as much as digits as its factorization.

4376505421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 4376505421 is about 66155.1617109353. The cubic root of 4376505421 is about 1635.7207271784.

The spelling of 4376505421 in words is "four billion, three hundred seventy-six million, five hundred five thousand, four hundred twenty-one".