423385878 has 16 divisors (see below), whose sum is σ = 846993600. Its totient is φ = 141091656.

The previous prime is 423385861. The next prime is 423385903. The reversal of 423385878 is 878583324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25773 + ... + 38871.

It is an arithmetic number, because the mean of its divisors is an integer number (52937100).

Almost surely, 2^423385878 is an apocalyptic number.

423385878 is an abundant number, since it is smaller than the sum of its proper divisors (423607722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423385878 is a wasteful number, since it uses less digits than its factorization.

423385878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18491.

The product of its digits is 1290240, while the sum is 48.

The square root of 423385878 is about 20576.3426779396. The cubic root of 423385878 is about 750.8942683994.

The spelling of 423385878 in words is "four hundred twenty-three million, three hundred eighty-five thousand, eight hundred seventy-eight".