87938986 has 8 divisors (see below), whose sum is σ = 131948964. Its totient is φ = 43956000.

The previous prime is 87938953. The next prime is 87938993. The reversal of 87938986 is 68983978.

It can be written as a sum of positive squares in 2 ways, for example, as 87329025 + 609961 = 9345^2 + 781^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 87938986.

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, 7006 + ... + 14998.

Almost surely, 2^87938986 is an apocalyptic number.

87938986 is a deficient number, since it is larger than the sum of its proper divisors (44009978).

87938986 is a wasteful number, since it uses less digits than its factorization.

87938986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13496.

The product of its digits is 5225472, while the sum is 58.

The square root of 87938986 is about 9377.5788986284. The cubic root of 87938986 is about 444.6931959214.

The spelling of 87938986 in words is "eighty-seven million, nine hundred thirty-eight thousand, nine hundred eighty-six".