424499989 has 2 divisors, whose sum is σ = 424499990. Its totient is φ = 424499988.

The previous prime is 424499947. The next prime is 424500017. The reversal of 424499989 is 989994424.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238177489 + 186322500 = 15433^2 + 13650^2 .

It is a cyclic number.

It is not a de Polignac number, because 424499989 - 2⁷ = 424499861 is a prime.

It is a super-2 number, since 2×424499989² = 360400481322000242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424499389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212249994 + 212249995.

It is an arithmetic number, because the mean of its divisors is an integer number (212249995).

Almost surely, 2^424499989 is an apocalyptic number.

It is an amenable number.

424499989 is a deficient number, since it is larger than the sum of its proper divisors (1).

424499989 is an equidigital number, since it uses as much as digits as its factorization.

424499989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 58.

The square root of 424499989 is about 20603.3975110903. The cubic root of 424499989 is about 751.5523338332.

The spelling of 424499989 in words is "four hundred twenty-four million, four hundred ninety-nine thousand, nine hundred eighty-nine".