423859969 has 8 divisors (see below), whose sum is σ = 472205160. Its totient is φ = 377763456.

The previous prime is 423859913. The next prime is 423859979. The reversal of 423859969 is 969958324.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31225744 + 392634225 = 5588^2 + 19815^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423859969 - 2⁷ = 423859841 is a prime.

It is a super-2 number, since 2×423859969² = 359314546641361922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423859979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561772 + ... + 562525.

It is an arithmetic number, because the mean of its divisors is an integer number (59025645).

Almost surely, 2^423859969 is an apocalyptic number.

It is an amenable number.

423859969 is a deficient number, since it is larger than the sum of its proper divisors (48345191).

423859969 is a wasteful number, since it uses less digits than its factorization.

423859969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124339.

The product of its digits is 4199040, while the sum is 55.

The square root of 423859969 is about 20587.8597479194. The cubic root of 423859969 is about 751.1744378935.

The spelling of 423859969 in words is "four hundred twenty-three million, eight hundred fifty-nine thousand, nine hundred sixty-nine".