423439400 has 48 divisors (see below), whose sum is σ = 1042416540. Its totient is φ = 159411200.

The previous prime is 423439391. The next prime is 423439439. The reversal of 423439400 is 4934324.

It can be written as a sum of positive squares in 6 ways, for example, as 69322276 + 354117124 = 8326^2 + 18818^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58871 + ... + 65670.

Almost surely, 2^423439400 is an apocalyptic number.

423439400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423439400 is an abundant number, since it is smaller than the sum of its proper divisors (618977140).

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

423439400 is a wasteful number, since it uses less digits than its factorization.

423439400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124574 (or 124565 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 423439400 is about 20577.6432081033. The cubic root of 423439400 is about 750.9259083065.

It can be divided in two parts, 4234 and 39400, that added together give a palindrome (43634).

The spelling of 423439400 in words is "four hundred twenty-three million, four hundred thirty-nine thousand, four hundred".