454540423 has 2 divisors, whose sum is σ = 454540424. Its totient is φ = 454540422.

The previous prime is 454540409. The next prime is 454540459. The reversal of 454540423 is 324045454.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-454540423 is a prime.

It is a super-2 number, since 2×454540423² = 413213992282037858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (454570423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227270211 + 227270212.

It is an arithmetic number, because the mean of its divisors is an integer number (227270212).

Almost surely, 2^454540423 is an apocalyptic number.

454540423 is a deficient number, since it is larger than the sum of its proper divisors (1).

454540423 is an equidigital number, since it uses as much as digits as its factorization.

454540423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 31.

The square root of 454540423 is about 21319.9536350340. The cubic root of 454540423 is about 768.8781228012.

Adding to 454540423 its reverse (324045454), we get a palindrome (778585877).

The spelling of 454540423 in words is "four hundred fifty-four million, five hundred forty thousand, four hundred twenty-three".