87439858 has 8 divisors (see below), whose sum is σ = 143083440. Its totient is φ = 39745380.

The previous prime is 87439817. The next prime is 87439867. The reversal of 87439858 is 85893478.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1987248 + ... + 1987291.

It is an arithmetic number, because the mean of its divisors is an integer number (17885430).

Almost surely, 2^87439858 is an apocalyptic number.

87439858 is a deficient number, since it is larger than the sum of its proper divisors (55643582).

87439858 is a wasteful number, since it uses less digits than its factorization.

87439858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974552.

The product of its digits is 1935360, while the sum is 52.

The square root of 87439858 is about 9350.9281892227. The cubic root of 87439858 is about 443.8502626583.

The spelling of 87439858 in words is "eighty-seven million, four hundred thirty-nine thousand, eight hundred fifty-eight".