424789997 has 4 divisors (see below), whose sum is σ = 425483580. Its totient is φ = 424096416.

The previous prime is 424789987. The next prime is 424790017. The reversal of 424789997 is 799987424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118504996 + 306285001 = 10886^2 + 17501^2 .

It is a cyclic number.

It is not a de Polignac number, because 424789997 - 2⁸ = 424789741 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 (424789907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345872 + ... + 347097.

It is an arithmetic number, because the mean of its divisors is an integer number (106370895).

Almost surely, 2^424789997 is an apocalyptic number.

It is an amenable number.

424789997 is a deficient number, since it is larger than the sum of its proper divisors (693583).

424789997 is an equidigital number, since it uses as much as digits as its factorization.

424789997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693582.

The product of its digits is 9144576, while the sum is 59.

The square root of 424789997 is about 20610.4341778624. The cubic root of 424789997 is about 751.7234422585.

The spelling of 424789997 in words is "four hundred twenty-four million, seven hundred eighty-nine thousand, nine hundred ninety-seven".