87879842 has 8 divisors (see below), whose sum is σ = 131867676. Its totient is φ = 43923952.

The previous prime is 87879839. The next prime is 87879853. The reversal of 87879842 is 24897878.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 86508601 + 1371241 = 9301^2 + 1171^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848 + ... + 13284.

Almost surely, 2^87879842 is an apocalyptic number.

87879842 is a deficient number, since it is larger than the sum of its proper divisors (43987834).

87879842 is a wasteful number, since it uses less digits than its factorization.

87879842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15972.

The product of its digits is 1806336, while the sum is 53.

The square root of 87879842 is about 9374.4248890265. The cubic root of 87879842 is about 444.5934796898.

The spelling of 87879842 in words is "eighty-seven million, eight hundred seventy-nine thousand, eight hundred forty-two".