130669409 has 8 divisors (see below), whose sum is σ = 140929320. Its totient is φ = 120439296.

The previous prime is 130669393. The next prime is 130669421. The reversal of 130669409 is 904966031.

It can be written as a sum of positive squares in 4 ways, for example, as 15429184 + 115240225 = 3928^2 + 10735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130669409 - 2⁴ = 130669393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130669109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2129 + ... + 16305.

It is an arithmetic number, because the mean of its divisors is an integer number (17616165).

Almost surely, 2^130669409 is an apocalyptic number.

It is an amenable number.

130669409 is a deficient number, since it is larger than the sum of its proper divisors (10259911).

130669409 is a wasteful number, since it uses less digits than its factorization.

130669409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14899.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 130669409 is about 11431.0720844547. The cubic root of 130669409 is about 507.4477239949.

The spelling of 130669409 in words is "one hundred thirty million, six hundred sixty-nine thousand, four hundred nine".