87818446 has 4 divisors (see below), whose sum is σ = 131727672. Its totient is φ = 43909222.

The previous prime is 87818417. The next prime is 87818459. The reversal of 87818446 is 64481878.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64481878 = 2 ⋅32240939.

It is a junction number, because it is equal to n+sod(n) for n = 87818396 and 87818405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21954610 + ... + 21954613.

It is an arithmetic number, because the mean of its divisors is an integer number (32931918).

Almost surely, 2^87818446 is an apocalyptic number.

87818446 is a deficient number, since it is larger than the sum of its proper divisors (43909226).

87818446 is a wasteful number, since it uses less digits than its factorization.

87818446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43909225.

The product of its digits is 344064, while the sum is 46.

The square root of 87818446 is about 9371.1496626615. The cubic root of 87818446 is about 444.4899192682.

The spelling of 87818446 in words is "eighty-seven million, eight hundred eighteen thousand, four hundred forty-six".