438246655 has 32 divisors (see below), whose sum is σ = 694241280. Its totient is φ = 257118720.

The previous prime is 438246649. The next prime is 438246673. The reversal of 438246655 is 556642834.

It is not a de Polignac number, because 438246655 - 2¹⁹ = 437722367 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 26935 + ... + 40024.

It is an arithmetic number, because the mean of its divisors is an integer number (21695040).

Almost surely, 2^438246655 is an apocalyptic number.

438246655 is a deficient number, since it is larger than the sum of its proper divisors (255994625).

438246655 is a wasteful number, since it uses less digits than its factorization.

438246655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66999.

The product of its digits is 691200, while the sum is 43.

The square root of 438246655 is about 20934.3415229617. The cubic root of 438246655 is about 759.5788612066.

The spelling of 438246655 in words is "four hundred thirty-eight million, two hundred forty-six thousand, six hundred fifty-five".