89987870 has 64 divisors (see below), whose sum is σ = 193898880. Its totient is φ = 29417472.

The previous prime is 89987867. The next prime is 89987897. The reversal of 89987870 is 7878998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196682 + ... + 197138.

It is an arithmetic number, because the mean of its divisors is an integer number (3029670).

Almost surely, 2^89987870 is an apocalyptic number.

89987870 is an abundant number, since it is smaller than the sum of its proper divisors (103911010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89987870 is a wasteful number, since it uses less digits than its factorization.

89987870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597.

The product of its (nonzero) digits is 2032128, while the sum is 56.

The square root of 89987870 is about 9486.1936518290. The cubic root of 89987870 is about 448.1203406254.

It can be divided in two parts, 89 and 987870, that multiplied together give a triangular number (87920430 = T₁₃₂₆₀).

The spelling of 89987870 in words is "eighty-nine million, nine hundred eighty-seven thousand, eight hundred seventy".