423978558 has 32 divisors (see below), whose sum is σ = 856880640. Its totient is φ = 139846080.

The previous prime is 423978557. The next prime is 423978571. The reversal of 423978558 is 855879324.

Its product of digits (2419200) is a multiple of the sum of its prime divisors (1792).

It is a self number, because there is not a number n which added to its sum of digits gives 423978558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423978557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343803 + ... + 345033.

It is an arithmetic number, because the mean of its divisors is an integer number (26777520).

Almost surely, 2^423978558 is an apocalyptic number.

423978558 is an abundant number, since it is smaller than the sum of its proper divisors (432902082).

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

423978558 is a wasteful number, since it uses less digits than its factorization.

423978558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792.

The product of its digits is 2419200, while the sum is 51.

The square root of 423978558 is about 20590.7396176048. The cubic root of 423978558 is about 751.2444867504.

The spelling of 423978558 in words is "four hundred twenty-three million, nine hundred seventy-eight thousand, five hundred fifty-eight".