423908 has 6 divisors (see below), whose sum is σ = 741846. Its totient is φ = 211952.

The previous prime is 423887. The next prime is 423931. The reversal of 423908 is 809324.

It can be written as a sum of positive squares in only one way, i.e., 362404 + 61504 = 602^2 + 248^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52985 + ... + 52992.

It is an arithmetic number, because the mean of its divisors is an integer number (123641).

2⁴²³⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

423908 is a deficient number, since it is larger than the sum of its proper divisors (317938).

423908 is a wasteful number, since it uses less digits than its factorization.

423908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105981 (or 105979 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 423908 is about 651.0821760730. The cubic root of 423908 is about 75.1202810705.

It can be divided in two parts, 423 and 908, that added together give a palindrome (1331).

The spelling of 423908 in words is "four hundred twenty-three thousand, nine hundred eight".