469209569 has 2 divisors, whose sum is σ = 469209570. Its totient is φ = 469209568.

The previous prime is 469209557. The next prime is 469209577. The reversal of 469209569 is 965902964.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426959569 + 42250000 = 20663^2 + 6500^2 .

It is a cyclic number.

It is not a de Polignac number, because 469209569 - 2²⁰ = 468160993 is a prime.

It is a super-2 number, since 2×469209569² = 440315239282331522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (469200569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234604784 + 234604785.

It is an arithmetic number, because the mean of its divisors is an integer number (234604785).

Almost surely, 2^469209569 is an apocalyptic number.

It is an amenable number.

469209569 is a deficient number, since it is larger than the sum of its proper divisors (1).

469209569 is an equidigital number, since it uses as much as digits as its factorization.

469209569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 469209569 is about 21661.2457859653. The cubic root of 469209569 is about 777.0619080559.

The spelling of 469209569 in words is "four hundred sixty-nine million, two hundred nine thousand, five hundred sixty-nine".