426221446 has 16 divisors (see below), whose sum is σ = 737496576. Its totient is φ = 180958536.

The previous prime is 426221443. The next prime is 426221447. The reversal of 426221446 is 644122624.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426221443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140766 + ... + 143761.

It is an arithmetic number, because the mean of its divisors is an integer number (46093536).

Almost surely, 2^426221446 is an apocalyptic number.

426221446 is a deficient number, since it is larger than the sum of its proper divisors (311275130).

426221446 is a wasteful number, since it uses less digits than its factorization.

426221446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284643.

The product of its digits is 18432, while the sum is 31.

The square root of 426221446 is about 20645.1312904520. The cubic root of 426221446 is about 752.5668765411.

The spelling of 426221446 in words is "four hundred twenty-six million, two hundred twenty-one thousand, four hundred forty-six".