87965844 has 24 divisors (see below), whose sum is σ = 206565408. Its totient is φ = 29134560.

The previous prime is 87965827. The next prime is 87965851. The reversal of 87965844 is 44856978.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21462 + ... + 25229.

It is an arithmetic number, because the mean of its divisors is an integer number (8606892).

Almost surely, 2^87965844 is an apocalyptic number.

It is an amenable number.

87965844 is an abundant number, since it is smaller than the sum of its proper divisors (118599564).

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

87965844 is a wasteful number, since it uses less digits than its factorization.

87965844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46855 (or 46853 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 87965844 is about 9379.0108220430. The cubic root of 87965844 is about 444.7384634972.

The spelling of 87965844 in words is "eighty-seven million, nine hundred sixty-five thousand, eight hundred forty-four".