423901440 has 216 divisors, whose sum is σ = 1515241728. Its totient is φ = 109301760.

The previous prime is 423901433. The next prime is 423901441. The reversal of 423901440 is 44109324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423901441) 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, 356527 + ... + 357713.

It is an arithmetic number, because the mean of its divisors is an integer number (7015008).

Almost surely, 2^423901440 is an apocalyptic number.

423901440 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 423901440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757620864).

423901440 is an abundant number, since it is smaller than the sum of its proper divisors (1091340288).

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

423901440 is a wasteful number, since it uses less digits than its factorization.

423901440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1228 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 423901440 is about 20588.8668945136. The cubic root of 423901440 is about 751.1989357163.

The spelling of 423901440 in words is "four hundred twenty-three million, nine hundred one thousand, four hundred forty".