87444165 has 16 divisors (see below), whose sum is σ = 140040000. Its totient is φ = 46593792.

The previous prime is 87444131. The next prime is 87444167. The reversal of 87444165 is 56144478.

It is not a de Polignac number, because 87444165 - 2¹⁰ = 87443141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87444167) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20541 + ... + 24429.

It is an arithmetic number, because the mean of its divisors is an integer number (8752500).

Almost surely, 2^87444165 is an apocalyptic number.

It is an amenable number.

87444165 is a deficient number, since it is larger than the sum of its proper divisors (52595835).

87444165 is a wasteful number, since it uses less digits than its factorization.

87444165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396.

The product of its digits is 107520, while the sum is 39.

The square root of 87444165 is about 9351.1584843804. The cubic root of 87444165 is about 443.8575500737.

The spelling of 87444165 in words is "eighty-seven million, four hundred forty-four thousand, one hundred sixty-five".