418451449 has 4 divisors (see below), whose sum is σ = 450640036. Its totient is φ = 386262864.

The previous prime is 418451437. The next prime is 418451491. The reversal of 418451449 is 944154814.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 247495824 + 170955625 = 15732^2 + 13075^2 .

It is not a de Polignac number, because 418451449 - 2⁷ = 418451321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (418451419) 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 in 3 ways as a sum of consecutive naturals, for example, 16094274 + ... + 16094299.

It is an arithmetic number, because the mean of its divisors is an integer number (112660009).

Almost surely, 2^418451449 is an apocalyptic number.

It is an amenable number.

418451449 is a deficient number, since it is larger than the sum of its proper divisors (32188587).

418451449 is a wasteful number, since it uses less digits than its factorization.

418451449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32188586.

The product of its digits is 92160, while the sum is 40.

The square root of 418451449 is about 20456.0858670470. The cubic root of 418451449 is about 747.9657162788.

The spelling of 418451449 in words is "four hundred eighteen million, four hundred fifty-one thousand, four hundred forty-nine".