424424389 has 2 divisors, whose sum is σ = 424424390. Its totient is φ = 424424388.

The previous prime is 424424383. The next prime is 424424443. The reversal of 424424389 is 983424424.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417507489 + 6916900 = 20433^2 + 2630^2 .

It is a cyclic number.

It is not a de Polignac number, because 424424389 - 2¹³ = 424416197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424424383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212212194 + 212212195.

It is an arithmetic number, because the mean of its divisors is an integer number (212212195).

Almost surely, 2^424424389 is an apocalyptic number.

It is an amenable number.

424424389 is a deficient number, since it is larger than the sum of its proper divisors (1).

424424389 is an equidigital number, since it uses as much as digits as its factorization.

424424389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 40.

The square root of 424424389 is about 20601.5627805271. The cubic root of 424424389 is about 751.5077160624.

The spelling of 424424389 in words is "four hundred twenty-four million, four hundred twenty-four thousand, three hundred eighty-nine".