102030989 has 8 divisors (see below), whose sum is σ = 104136192. Its totient is φ = 99932560.

The previous prime is 102030953. The next prime is 102031037. The reversal of 102030989 is 989030201.

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

It is a de Polignac number, because none of the positive numbers 2^k-102030989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102030289) 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, 38084 + ... + 40674.

It is an arithmetic number, because the mean of its divisors is an integer number (13017024).

Almost surely, 2^102030989 is an apocalyptic number.

It is an amenable number.

102030989 is a deficient number, since it is larger than the sum of its proper divisors (2105203).

102030989 is an equidigital number, since it uses as much as digits as its factorization.

102030989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 102030989 is about 10101.0390059637. The cubic root of 102030989 is about 467.2801852977.

The spelling of 102030989 in words is "one hundred two million, thirty thousand, nine hundred eighty-nine".