87444478 has 8 divisors (see below), whose sum is σ = 143091000. Its totient is φ = 39747480.

The previous prime is 87444463. The next prime is 87444509.

87444478 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 1987353 + ... + 1987396.

It is an arithmetic number, because the mean of its divisors is an integer number (17886375).

Almost surely, 2^87444478 is an apocalyptic number.

87444478 is a deficient number, since it is larger than the sum of its proper divisors (55646522).

87444478 is a wasteful number, since it uses less digits than its factorization.

87444478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974762.

The product of its digits is 802816, while the sum is 46.

The square root of 87444478 is about 9351.1752202598. The cubic root of 87444478 is about 443.8580796583.

The spelling of 87444478 in words is "eighty-seven million, four hundred forty-four thousand, four hundred seventy-eight".