87879851 has 16 divisors (see below), whose sum is σ = 96979680. Its totient is φ = 79288320.

The previous prime is 87879839. The next prime is 87879853. The reversal of 87879851 is 15897878.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 87879851 - 2¹⁰ = 87878827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87879793 and 87879802.

It is not an unprimeable number, because it can be changed into a prime (87879853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40055 + ... + 42191.

It is an arithmetic number, because the mean of its divisors is an integer number (6061230).

Almost surely, 2^87879851 is an apocalyptic number.

87879851 is a deficient number, since it is larger than the sum of its proper divisors (9099829).

87879851 is a wasteful number, since it uses less digits than its factorization.

87879851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254.

The product of its digits is 1128960, while the sum is 53.

The square root of 87879851 is about 9374.4253690560. The cubic root of 87879851 is about 444.5934948671.

The spelling of 87879851 in words is "eighty-seven million, eight hundred seventy-nine thousand, eight hundred fifty-one".