440253426 has 16 divisors (see below), whose sum is σ = 888737184. Its totient is φ = 145379424.

The previous prime is 440253421. The next prime is 440253439. The reversal of 440253426 is 624352044.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 440253393 and 440253402.

It is not an unprimeable number, because it can be changed into a prime (440253421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342235 + ... + 343518.

It is an arithmetic number, because the mean of its divisors is an integer number (55546074).

Almost surely, 2^440253426 is an apocalyptic number.

440253426 is an abundant number, since it is smaller than the sum of its proper divisors (448483758).

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

440253426 is a wasteful number, since it uses less digits than its factorization.

440253426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685865.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 440253426 is about 20982.2168990791. The cubic root of 440253426 is about 760.7364894336.

The spelling of 440253426 in words is "four hundred forty million, two hundred fifty-three thousand, four hundred twenty-six".