987890101 has 12 divisors (see below), whose sum is σ = 1087114336. Its totient is φ = 897046920.

The previous prime is 987890087. The next prime is 987890117. The reversal of 987890101 is 101098789.

It is not a de Polignac number, because 987890101 - 2¹⁵ = 987857333 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987890131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112786 + ... + 121228.

Almost surely, 2^987890101 is an apocalyptic number.

It is an amenable number.

987890101 is a deficient number, since it is larger than the sum of its proper divisors (99224235).

987890101 is a wasteful number, since it uses less digits than its factorization.

987890101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9432 (or 9421 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 987890101 is about 31430.7190659075. The cubic root of 987890101 is about 995.9469620768.

The spelling of 987890101 in words is "nine hundred eighty-seven million, eight hundred ninety thousand, one hundred one".