8434401901 has 2 divisors, whose sum is σ = 8434401902. Its totient is φ = 8434401900.

The previous prime is 8434401881. The next prime is 8434401919. The reversal of 8434401901 is 1091044348.

8434401901 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7439062500 + 995339401 = 86250^2 + 31549^2 .

It is a cyclic number.

It is not a de Polignac number, because 8434401901 - 2⁹ = 8434401389 is a prime.

It is a super-2 number, since 2×8434401901² (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 (8434402901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4217200950 + 4217200951.

It is an arithmetic number, because the mean of its divisors is an integer number (4217200951).

Almost surely, 2^8434401901 is an apocalyptic number.

It is an amenable number.

8434401901 is a deficient number, since it is larger than the sum of its proper divisors (1).

8434401901 is an equidigital number, since it uses as much as digits as its factorization.

8434401901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 8434401901 is about 91838.9998911138. Note that the first 3 decimals coincide. The cubic root of 8434401901 is about 2035.5640105502.

The spelling of 8434401901 in words is "eight billion, four hundred thirty-four million, four hundred one thousand, nine hundred one".