458791609 has 2 divisors, whose sum is σ = 458791610. Its totient is φ = 458791608.

The previous prime is 458791607. The next prime is 458791637. The reversal of 458791609 is 906197854.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305725225 + 153066384 = 17485^2 + 12372^2 .

It is a cyclic number.

It is not a de Polignac number, because 458791609 - 2¹ = 458791607 is a prime.

Together with 458791607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (458791607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229395804 + 229395805.

It is an arithmetic number, because the mean of its divisors is an integer number (229395805).

Almost surely, 2^458791609 is an apocalyptic number.

It is an amenable number.

458791609 is a deficient number, since it is larger than the sum of its proper divisors (1).

458791609 is an equidigital number, since it uses as much as digits as its factorization.

458791609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 458791609 is about 21419.4213040409. The cubic root of 458791609 is about 771.2677205409.

The spelling of 458791609 in words is "four hundred fifty-eight million, seven hundred ninety-one thousand, six hundred nine".