458923921 has 2 divisors, whose sum is σ = 458923922. Its totient is φ = 458923920.

The previous prime is 458923909. The next prime is 458923931. The reversal of 458923921 is 129329854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445674321 + 13249600 = 21111^2 + 3640^2 .

It is a cyclic number.

It is not a de Polignac number, because 458923921 - 2⁷ = 458923793 is a prime.

It is a super-2 number, since 2×458923921² = 421222330532028482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (458923931) 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, 229461960 + 229461961.

It is an arithmetic number, because the mean of its divisors is an integer number (229461961).

Almost surely, 2^458923921 is an apocalyptic number.

It is an amenable number.

458923921 is a deficient number, since it is larger than the sum of its proper divisors (1).

458923921 is an equidigital number, since it uses as much as digits as its factorization.

458923921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 458923921 is about 21422.5096802405. The cubic root of 458923921 is about 771.3418559903.

The spelling of 458923921 in words is "four hundred fifty-eight million, nine hundred twenty-three thousand, nine hundred twenty-one".