454842109 has 2 divisors, whose sum is σ = 454842110. Its totient is φ = 454842108.

The previous prime is 454842107. The next prime is 454842133. The reversal of 454842109 is 901248454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442260900 + 12581209 = 21030^2 + 3547^2 .

It is a cyclic number.

It is not a de Polignac number, because 454842109 - 2¹ = 454842107 is a prime.

Together with 454842107, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (454842103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227421054 + 227421055.

It is an arithmetic number, because the mean of its divisors is an integer number (227421055).

Almost surely, 2^454842109 is an apocalyptic number.

It is an amenable number.

454842109 is a deficient number, since it is larger than the sum of its proper divisors (1).

454842109 is an equidigital number, since it uses as much as digits as its factorization.

454842109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 454842109 is about 21327.0276644449. The cubic root of 454842109 is about 769.0481908920.

The spelling of 454842109 in words is "four hundred fifty-four million, eight hundred forty-two thousand, one hundred nine".