454636409 has 2 divisors, whose sum is σ = 454636410. Its totient is φ = 454636408.

The previous prime is 454636379. The next prime is 454636411. The reversal of 454636409 is 904636454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426546409 + 28090000 = 20653^2 + 5300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-454636409 is a prime.

Together with 454636411, 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 (454636489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227318204 + 227318205.

It is an arithmetic number, because the mean of its divisors is an integer number (227318205).

Almost surely, 2^454636409 is an apocalyptic number.

It is an amenable number.

454636409 is a deficient number, since it is larger than the sum of its proper divisors (1).

454636409 is an equidigital number, since it uses as much as digits as its factorization.

454636409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 454636409 is about 21322.2045999001. The cubic root of 454636409 is about 768.9322407171.

The spelling of 454636409 in words is "four hundred fifty-four million, six hundred thirty-six thousand, four hundred nine".