440721226 has 64 divisors (see below), whose sum is σ = 812592000. Its totient is φ = 176670720.

The previous prime is 440721223. The next prime is 440721247. The reversal of 440721226 is 622127044.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 440721194 and 440721203.

It is not an unprimeable number, because it can be changed into a prime (440721223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 774270 + ... + 774838.

It is an arithmetic number, because the mean of its divisors is an integer number (12696750).

Almost surely, 2^440721226 is an apocalyptic number.

440721226 is a deficient number, since it is larger than the sum of its proper divisors (371870774).

440721226 is a wasteful number, since it uses less digits than its factorization.

440721226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 440721226 is about 20993.3614745233. The cubic root of 440721226 is about 761.0058392645.

The spelling of 440721226 in words is "four hundred forty million, seven hundred twenty-one thousand, two hundred twenty-six".