102889439 has 8 divisors (see below), whose sum is σ = 105378240. Its totient is φ = 100413216.

The previous prime is 102889433. The next prime is 102889441. The reversal of 102889439 is 934988201.

It is a happy number.

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 102889439 - 2⁸ = 102889183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102889439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102889433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14597 + ... + 20465.

It is an arithmetic number, because the mean of its divisors is an integer number (13172280).

Almost surely, 2^102889439 is an apocalyptic number.

102889439 is a deficient number, since it is larger than the sum of its proper divisors (2488801).

102889439 is an equidigital number, since it uses as much as digits as its factorization.

102889439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6289.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 102889439 is about 10143.4431530916. The cubic root of 102889439 is about 468.5870330320.

The spelling of 102889439 in words is "one hundred two million, eight hundred eighty-nine thousand, four hundred thirty-nine".