454721838 has 16 divisors (see below), whose sum is σ = 918820560. Its totient is φ = 150011136.

The previous prime is 454721837. The next prime is 454721879. The reversal of 454721838 is 838127454.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 454721838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454721837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390073 + ... + 391236.

It is an arithmetic number, because the mean of its divisors is an integer number (57426285).

Almost surely, 2^454721838 is an apocalyptic number.

454721838 is an abundant number, since it is smaller than the sum of its proper divisors (464098722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

454721838 is a wasteful number, since it uses less digits than its factorization.

454721838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781411.

The product of its digits is 215040, while the sum is 42.

The square root of 454721838 is about 21324.2077930225. The cubic root of 454721838 is about 768.9804000792.

The spelling of 454721838 in words is "four hundred fifty-four million, seven hundred twenty-one thousand, eight hundred thirty-eight".