8234450921 has 2 divisors, whose sum is σ = 8234450922. Its totient is φ = 8234450920.

The previous prime is 8234450909. The next prime is 8234450923. The reversal of 8234450921 is 1290544328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8125039321 + 109411600 = 90139^2 + 10460^2 .

It is a cyclic number.

It is not a de Polignac number, because 8234450921 - 2¹⁸ = 8234188777 is a prime.

Together with 8234450923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8234450923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4117225460 + 4117225461.

It is an arithmetic number, because the mean of its divisors is an integer number (4117225461).

Almost surely, 2^8234450921 is an apocalyptic number.

It is an amenable number.

8234450921 is a deficient number, since it is larger than the sum of its proper divisors (1).

8234450921 is an equidigital number, since it uses as much as digits as its factorization.

8234450921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 8234450921 is about 90743.8753911249. The cubic root of 8234450921 is about 2019.3497662879.

The spelling of 8234450921 in words is "eight billion, two hundred thirty-four million, four hundred fifty thousand, nine hundred twenty-one".