469709221 has 2 divisors, whose sum is σ = 469709222. Its totient is φ = 469709220.

The previous prime is 469709183. The next prime is 469709237. The reversal of 469709221 is 122907964.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467856900 + 1852321 = 21630^2 + 1361^2 .

It is a cyclic number.

It is not a de Polignac number, because 469709221 - 2¹⁵ = 469676453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (469709281) 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 as a sum of consecutive naturals, namely, 234854610 + 234854611.

It is an arithmetic number, because the mean of its divisors is an integer number (234854611).

Almost surely, 2^469709221 is an apocalyptic number.

It is an amenable number.

469709221 is a deficient number, since it is larger than the sum of its proper divisors (1).

469709221 is an equidigital number, since it uses as much as digits as its factorization.

469709221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 469709221 is about 21672.7760335403. The cubic root of 469709221 is about 777.3376361644.

The spelling of 469709221 in words is "four hundred sixty-nine million, seven hundred nine thousand, two hundred twenty-one".