102881989 has 8 divisors (see below), whose sum is σ = 117653120. Its totient is φ = 88129296.

The previous prime is 102881981. The next prime is 102882001. The reversal of 102881989 is 989188201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102881989 - 2³ = 102881981 is a prime.

It is a super-2 number, since 2×102881989² = 21169407321192242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102881981) 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 7 ways as a sum of consecutive naturals, for example, 10792 + ... + 17950.

It is an arithmetic number, because the mean of its divisors is an integer number (14706640).

Almost surely, 2^102881989 is an apocalyptic number.

It is an amenable number.

102881989 is a deficient number, since it is larger than the sum of its proper divisors (14771131).

102881989 is an equidigital number, since it uses as much as digits as its factorization.

102881989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9219.

The product of its (nonzero) digits is 82944, while the sum is 46.

The square root of 102881989 is about 10143.0759141397. The cubic root of 102881989 is about 468.5757229704.

The spelling of 102881989 in words is "one hundred two million, eight hundred eighty-one thousand, nine hundred eighty-nine".