438450455 has 4 divisors (see below), whose sum is σ = 526140552. Its totient is φ = 350760360.

The previous prime is 438450443. The next prime is 438450469. The reversal of 438450455 is 554054834.

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

It is a de Polignac number, because none of the positive numbers 2^k-438450455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 43845041 + ... + 43845050.

It is an arithmetic number, because the mean of its divisors is an integer number (131535138).

Almost surely, 2^438450455 is an apocalyptic number.

438450455 is a deficient number, since it is larger than the sum of its proper divisors (87690097).

438450455 is an equidigital number, since it uses as much as digits as its factorization.

438450455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87690096.

The product of its (nonzero) digits is 192000, while the sum is 38.

The square root of 438450455 is about 20939.2085571542. The cubic root of 438450455 is about 759.6965865257.

The spelling of 438450455 in words is "four hundred thirty-eight million, four hundred fifty thousand, four hundred fifty-five".