424221764 has 6 divisors (see below), whose sum is σ = 742388094. Its totient is φ = 212110880.

The previous prime is 424221751. The next prime is 424221767. The reversal of 424221764 is 467122424.

It can be written as a sum of positive squares in only one way, i.e., 260176900 + 164044864 = 16130^2 + 12808^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 424221764.

It is not an unprimeable number, because it can be changed into a prime (424221767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53027717 + ... + 53027724.

It is an arithmetic number, because the mean of its divisors is an integer number (123731349).

Almost surely, 2^424221764 is an apocalyptic number.

It is an amenable number.

424221764 is a deficient number, since it is larger than the sum of its proper divisors (318166330).

424221764 is a wasteful number, since it uses less digits than its factorization.

424221764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106055445 (or 106055443 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 424221764 is about 20596.6444839930. The cubic root of 424221764 is about 751.3881042667.

The spelling of 424221764 in words is "four hundred twenty-four million, two hundred twenty-one thousand, seven hundred sixty-four".