423520885 has 8 divisors (see below), whose sum is σ = 509109336. Its totient is φ = 338227200.

The previous prime is 423520871. The next prime is 423520891. The reversal of 423520885 is 588025324.

It can be written as a sum of positive squares in 4 ways, for example, as 275095396 + 148425489 = 16586^2 + 12183^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-423520885 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 70516 + ... + 76285.

It is an arithmetic number, because the mean of its divisors is an integer number (63638667).

Almost surely, 2^423520885 is an apocalyptic number.

It is an amenable number.

423520885 is a deficient number, since it is larger than the sum of its proper divisors (85588451).

423520885 is a wasteful number, since it uses less digits than its factorization.

423520885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147383.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 423520885 is about 20579.6230529133. The cubic root of 423520885 is about 750.9740736190.

The spelling of 423520885 in words is "four hundred twenty-three million, five hundred twenty thousand, eight hundred eighty-five".