469920609 has 20 divisors (see below), whose sum is σ = 720957204. Its totient is φ = 304811424.

The previous prime is 469920601. The next prime is 469920643. The reversal of 469920609 is 906029964.

It can be written as a sum of positive squares in 2 ways, for example, as 413715600 + 56205009 = 20340^2 + 7497^2 .

It is not a de Polignac number, because 469920609 - 2³ = 469920601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (469920601) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 75402 + ... + 81395.

Almost surely, 2^469920609 is an apocalyptic number.

It is an amenable number.

469920609 is a deficient number, since it is larger than the sum of its proper divisors (251036595).

469920609 is a wasteful number, since it uses less digits than its factorization.

469920609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156846 (or 156837 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 469920609 is about 21677.6522944714. The cubic root of 469920609 is about 777.4542297198.

The spelling of 469920609 in words is "four hundred sixty-nine million, nine hundred twenty thousand, six hundred nine".