469785221 has 4 divisors (see below), whose sum is σ = 470321772. Its totient is φ = 469248672.

The previous prime is 469785187. The next prime is 469785223. The reversal of 469785221 is 122587964.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 146289025 + 323496196 = 12095^2 + 17986^2 .

It is a cyclic number.

It is not a de Polignac number, because 469785221 - 2¹⁸ = 469523077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469785223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266960 + ... + 268713.

It is an arithmetic number, because the mean of its divisors is an integer number (117580443).

Almost surely, 2^469785221 is an apocalyptic number.

It is an amenable number.

469785221 is a deficient number, since it is larger than the sum of its proper divisors (536551).

469785221 is an equidigital number, since it uses as much as digits as its factorization.

469785221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536550.

The product of its digits is 241920, while the sum is 44.

The square root of 469785221 is about 21674.5293143819. The cubic root of 469785221 is about 777.3795588914.

The spelling of 469785221 in words is "four hundred sixty-nine million, seven hundred eighty-five thousand, two hundred twenty-one".