104628989 has 2 divisors, whose sum is σ = 104628990. Its totient is φ = 104628988.

The previous prime is 104628983. The next prime is 104629037. The reversal of 104628989 is 989826401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91049764 + 13579225 = 9542^2 + 3685^2 .

It is an emirp because it is prime and its reverse (989826401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104628989 - 2¹² = 104624893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104628983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52314494 + 52314495.

It is an arithmetic number, because the mean of its divisors is an integer number (52314495).

Almost surely, 2^104628989 is an apocalyptic number.

It is an amenable number.

104628989 is a deficient number, since it is larger than the sum of its proper divisors (1).

104628989 is an equidigital number, since it uses as much as digits as its factorization.

104628989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 104628989 is about 10228.8312626614. The cubic root of 104628989 is about 471.2130862975.

The spelling of 104628989 in words is "one hundred four million, six hundred twenty-eight thousand, nine hundred eighty-nine".