454923721 has 4 divisors (see below), whose sum is σ = 519912832. Its totient is φ = 389934612.

The previous prime is 454923719. The next prime is 454923727. The reversal of 454923721 is 127329454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 454923721 - 2¹ = 454923719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (454923727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32494545 + ... + 32494558.

It is an arithmetic number, because the mean of its divisors is an integer number (129978208).

Almost surely, 2^454923721 is an apocalyptic number.

It is an amenable number.

454923721 is a deficient number, since it is larger than the sum of its proper divisors (64989111).

454923721 is an equidigital number, since it uses as much as digits as its factorization.

454923721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64989110.

The product of its digits is 60480, while the sum is 37.

The square root of 454923721 is about 21328.9409254187. The cubic root of 454923721 is about 769.0941847334.

The spelling of 454923721 in words is "four hundred fifty-four million, nine hundred twenty-three thousand, seven hundred twenty-one".