469489509 has 6 divisors (see below), whose sum is σ = 678151526. Its totient is φ = 312993000.

The previous prime is 469489477. The next prime is 469489543. The reversal of 469489509 is 905984964.

469489509 is a `hidden beast` number, since 46 + 94 + 8 + 9 + 509 = 666.

It can be written as a sum of positive squares in only one way, i.e., 283248900 + 186240609 = 16830^2 + 13647^2 .

It is not a de Polignac number, because 469489509 - 2⁵ = 469489477 is a prime.

It is a super-2 number, since 2×469489509² = 440840798122122162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469489549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26082742 + ... + 26082759.

Almost surely, 2^469489509 is an apocalyptic number.

It is an amenable number.

469489509 is a deficient number, since it is larger than the sum of its proper divisors (208662017).

469489509 is a wasteful number, since it uses less digits than its factorization.

469489509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52165507 (or 52165504 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 469489509 is about 21667.7065929923. The cubic root of 469489509 is about 777.2164143278.

The spelling of 469489509 in words is "four hundred sixty-nine million, four hundred eighty-nine thousand, five hundred nine".