454542399 has 24 divisors (see below), whose sum is σ = 691791360. Its totient is φ = 287025552.

The previous prime is 454542383. The next prime is 454542409. The reversal of 454542399 is 993245454.

It is a Cunningham number, because it is equal to 21320²-1.

It is not a de Polignac number, because 454542399 - 2⁴ = 454542383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454542899) 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 in 23 ways as a sum of consecutive naturals, for example, 10662 + ... + 31980.

It is an arithmetic number, because the mean of its divisors is an integer number (28824640).

Almost surely, 2^454542399 is an apocalyptic number.

454542399 is a deficient number, since it is larger than the sum of its proper divisors (237248961).

454542399 is a wasteful number, since it uses less digits than its factorization.

454542399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21451 (or 21448 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 454542399 is about 21319.9999765478. Note that the first 4 decimals coincide. The cubic root of 454542399 is about 768.8792369676.

The spelling of 454542399 in words is "four hundred fifty-four million, five hundred forty-two thousand, three hundred ninety-nine".