8430491 has 2 divisors, whose sum is σ = 8430492. Its totient is φ = 8430490.

The previous prime is 8430479. The next prime is 8430493. The reversal of 8430491 is 1940348.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8430491 - 2⁶ = 8430427 is a prime.

Together with 8430493, 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 (8430493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4215245 + 4215246.

It is an arithmetic number, because the mean of its divisors is an integer number (4215246).

Almost surely, 2^8430491 is an apocalyptic number.

8430491 is a deficient number, since it is larger than the sum of its proper divisors (1).

8430491 is an equidigital number, since it uses as much as digits as its factorization.

8430491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 8430491 is about 2903.5307816519. The cubic root of 8430491 is about 203.5249342117.

The spelling of 8430491 in words is "eight million, four hundred thirty thousand, four hundred ninety-one".