423496440 has 96 divisors (see below), whose sum is σ = 1378943280. Its totient is φ = 112720896.

The previous prime is 423496439. The next prime is 423496441. The reversal of 423496440 is 44694324.

423496440 is a `hidden beast` number, since 4 + 2 + 3 + 4 + 9 + 644 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (423496439) and next prime (423496441).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 423496395 and 423496404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423496441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 325872 + ... + 327168.

Almost surely, 2^423496440 is an apocalyptic number.

423496440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423496440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689471640).

423496440 is an abundant number, since it is smaller than the sum of its proper divisors (955446840).

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

423496440 is a wasteful number, since it uses less digits than its factorization.

423496440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221 (or 2214 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 423496440 is about 20579.0291316184. The cubic root of 423496440 is about 750.9596249695.

The spelling of 423496440 in words is "four hundred twenty-three million, four hundred ninety-six thousand, four hundred forty".