423554440 has 32 divisors (see below), whose sum is σ = 960284160. Its totient is φ = 168126400.

The previous prime is 423554431. The next prime is 423554447. The reversal of 423554440 is 44455324.

It is not an unprimeable number, because it can be changed into a prime (423554447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35176 + ... + 45655.

It is an arithmetic number, because the mean of its divisors is an integer number (30008880).

Almost surely, 2^423554440 is an apocalyptic number.

423554440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423554440 is an abundant number, since it is smaller than the sum of its proper divisors (536729720).

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

423554440 is a wasteful number, since it uses less digits than its factorization.

423554440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80973 (or 80969 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

The square root of 423554440 is about 20580.4382849346. The cubic root of 423554440 is about 750.9939059897.

The spelling of 423554440 in words is "four hundred twenty-three million, five hundred fifty-four thousand, four hundred forty".