87900722189 has 16 divisors (see below), whose sum is σ = 106403020416. Its totient is φ = 70887667200.

The previous prime is 87900722171. The next prime is 87900722243. The reversal of 87900722189 is 98122700978.

It is a happy number.

It is not a de Polignac number, because 87900722189 - 2¹⁶ = 87900656653 is a prime.

It is a super-2 number, since 2×87900722189² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87900722189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87900724189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235649 + ... + 480969.

It is an arithmetic number, because the mean of its divisors is an integer number (6650188776).

Almost surely, 2^87900722189 is an apocalyptic number.

It is an amenable number.

87900722189 is a deficient number, since it is larger than the sum of its proper divisors (18502298227).

87900722189 is a wasteful number, since it uses less digits than its factorization.

87900722189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248356.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The spelling of 87900722189 in words is "eighty-seven billion, nine hundred million, seven hundred twenty-two thousand, one hundred eighty-nine".