458621609 has 2 divisors, whose sum is σ = 458621610. Its totient is φ = 458621608.

The previous prime is 458621567. The next prime is 458621659. The reversal of 458621609 is 906126854.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347002384 + 111619225 = 18628^2 + 10565^2 .

It is a cyclic number.

It is not a de Polignac number, because 458621609 - 2¹⁶ = 458556073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (458621659) 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 as a sum of consecutive naturals, namely, 229310804 + 229310805.

It is an arithmetic number, because the mean of its divisors is an integer number (229310805).

Almost surely, 2^458621609 is an apocalyptic number.

It is an amenable number.

458621609 is a deficient number, since it is larger than the sum of its proper divisors (1).

458621609 is an equidigital number, since it uses as much as digits as its factorization.

458621609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 458621609 is about 21415.4525751851. The cubic root of 458621609 is about 771.1724472856.

The spelling of 458621609 in words is "four hundred fifty-eight million, six hundred twenty-one thousand, six hundred nine".