4454921 has 2 divisors, whose sum is σ = 4454922. Its totient is φ = 4454920.

The previous prime is 4454903. The next prime is 4454927. The reversal of 4454921 is 1294544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3200521 + 1254400 = 1789^2 + 1120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4454921 is a prime.

It is a super-2 number, since 2×4454921² = 39692642232482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4454927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2227460 + 2227461.

It is an arithmetic number, because the mean of its divisors is an integer number (2227461).

Almost surely, 2^4454921 is an apocalyptic number.

It is an amenable number.

4454921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4454921 is an equidigital number, since it uses as much as digits as its factorization.

4454921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 4454921 is about 2110.6683775525. The cubic root of 4454921 is about 164.5432239528.

The spelling of 4454921 in words is "four million, four hundred fifty-four thousand, nine hundred twenty-one".