8434441381 has 2 divisors, whose sum is σ = 8434441382. Its totient is φ = 8434441380.

The previous prime is 8434441307. The next prime is 8434441409. The reversal of 8434441381 is 1831444348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6815988481 + 1618452900 = 82559^2 + 40230^2 .

It is a cyclic number.

It is not a de Polignac number, because 8434441381 - 2⁹ = 8434440869 is a prime.

It is a super-2 number, since 2×8434441381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8434445381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4217220690 + 4217220691.

It is an arithmetic number, because the mean of its divisors is an integer number (4217220691).

Almost surely, 2^8434441381 is an apocalyptic number.

It is an amenable number.

8434441381 is a deficient number, since it is larger than the sum of its proper divisors (1).

8434441381 is an equidigital number, since it uses as much as digits as its factorization.

8434441381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 40.

The square root of 8434441381 is about 91839.2148322273. The cubic root of 8434441381 is about 2035.5671865881.

The spelling of 8434441381 in words is "eight billion, four hundred thirty-four million, four hundred forty-one thousand, three hundred eighty-one".