451734989 has 2 divisors, whose sum is σ = 451734990. Its totient is φ = 451734988.

The previous prime is 451734977. The next prime is 451735021. The reversal of 451734989 is 989437154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 436392100 + 15342889 = 20890^2 + 3917^2 .

It is a cyclic number.

It is not a de Polignac number, because 451734989 - 2²⁰ = 450686413 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451734929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225867494 + 225867495.

It is an arithmetic number, because the mean of its divisors is an integer number (225867495).

Almost surely, 2^451734989 is an apocalyptic number.

It is an amenable number.

451734989 is a deficient number, since it is larger than the sum of its proper divisors (1).

451734989 is an equidigital number, since it uses as much as digits as its factorization.

451734989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 451734989 is about 21254.0581772047. The cubic root of 451734989 is about 767.2930126855.

The spelling of 451734989 in words is "four hundred fifty-one million, seven hundred thirty-four thousand, nine hundred eighty-nine".