500120989 has 2 divisors, whose sum is σ = 500120990. Its totient is φ = 500120988.

The previous prime is 500120969. The next prime is 500121023. The reversal of 500120989 is 989021005.

It is an a-pointer prime, because the next prime (500121023) can be obtained adding 500120989 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 455096889 + 45024100 = 21333^2 + 6710^2 .

It is a cyclic number.

It is not a de Polignac number, because 500120989 - 2¹³ = 500112797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500120969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250060494 + 250060495.

It is an arithmetic number, because the mean of its divisors is an integer number (250060495).

Almost surely, 2^500120989 is an apocalyptic number.

It is an amenable number.

500120989 is a deficient number, since it is larger than the sum of its proper divisors (1).

500120989 is an equidigital number, since it uses as much as digits as its factorization.

500120989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 500120989 is about 22363.3850076414. The cubic root of 500120989 is about 793.7645401763.

It can be divided in two parts, 500 and 120989, that multiplied together give a triangular number (60494500 = T₁₀₉₉₉).

The spelling of 500120989 in words is "five hundred million, one hundred twenty thousand, nine hundred eighty-nine".