421727093 has 2 divisors, whose sum is σ = 421727094. Its totient is φ = 421727092.

The previous prime is 421727083. The next prime is 421727153. The reversal of 421727093 is 390727124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332953009 + 88774084 = 18247^2 + 9422^2 .

It is a cyclic number.

It is not a de Polignac number, because 421727093 - 2¹² = 421722997 is a prime.

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 (421727003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210863546 + 210863547.

It is an arithmetic number, because the mean of its divisors is an integer number (210863547).

Almost surely, 2^421727093 is an apocalyptic number.

It is an amenable number.

421727093 is a deficient number, since it is larger than the sum of its proper divisors (1).

421727093 is an equidigital number, since it uses as much as digits as its factorization.

421727093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 421727093 is about 20535.9950574595. The cubic root of 421727093 is about 749.9123411624.

The spelling of 421727093 in words is "four hundred twenty-one million, seven hundred twenty-seven thousand, ninety-three".