423508439 has 4 divisors (see below), whose sum is σ = 425515800. Its totient is φ = 421501080.

The previous prime is 423508429. The next prime is 423508441. The reversal of 423508439 is 934805324.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423508439 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 (423508409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003364 + ... + 1003785.

It is an arithmetic number, because the mean of its divisors is an integer number (106378950).

Almost surely, 2^423508439 is an apocalyptic number.

423508439 is a deficient number, since it is larger than the sum of its proper divisors (2007361).

423508439 is a wasteful number, since it uses less digits than its factorization.

423508439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007360.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 423508439 is about 20579.3206642008. The cubic root of 423508439 is about 750.9667172601.

The spelling of 423508439 in words is "four hundred twenty-three million, five hundred eight thousand, four hundred thirty-nine".