89871380 has 12 divisors (see below), whose sum is σ = 188729940. Its totient is φ = 35948544.

The previous prime is 89871359. The next prime is 89871389. The reversal of 89871380 is 8317898.

It can be written as a sum of positive squares in 2 ways, for example, as 16289296 + 73582084 = 4036^2 + 8578^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89871389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246765 + ... + 2246804.

It is an arithmetic number, because the mean of its divisors is an integer number (15727495).

Almost surely, 2^89871380 is an apocalyptic number.

It is an amenable number.

89871380 is an abundant number, since it is smaller than the sum of its proper divisors (98858560).

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

89871380 is a wasteful number, since it uses less digits than its factorization.

89871380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493578 (or 4493576 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 89871380 is about 9480.0516876228. The cubic root of 89871380 is about 447.9268920351.

It can be divided in two parts, 89871 and 380, that multiplied together give a triangular number (34150980 = T₈₂₆₄).

The spelling of 89871380 in words is "eighty-nine million, eight hundred seventy-one thousand, three hundred eighty".