454023209 has 2 divisors, whose sum is σ = 454023210. Its totient is φ = 454023208.

The previous prime is 454023187. The next prime is 454023211. The reversal of 454023209 is 902320454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452497984 + 1525225 = 21272^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 454023209 - 2¹² = 454019113 is a prime.

It is a super-2 number, since 2×454023209² = 412274148621315362, which contains 22 as substring.

Together with 454023211, 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 (454023239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227011604 + 227011605.

It is an arithmetic number, because the mean of its divisors is an integer number (227011605).

Almost surely, 2^454023209 is an apocalyptic number.

It is an amenable number.

454023209 is a deficient number, since it is larger than the sum of its proper divisors (1).

454023209 is an equidigital number, since it uses as much as digits as its factorization.

454023209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 454023209 is about 21307.8203718729. The cubic root of 454023209 is about 768.5863809007.

The spelling of 454023209 in words is "four hundred fifty-four million, twenty-three thousand, two hundred nine".