130409 has 2 divisors, whose sum is σ = 130410. Its totient is φ = 130408.

The previous prime is 130399. The next prime is 130411. The reversal of 130409 is 904031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120409 + 10000 = 347^2 + 100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130409 is a prime.

Together with 130411, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65204 + 65205.

It is an arithmetic number, because the mean of its divisors is an integer number (65205).

2¹³⁰⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

130409 is a deficient number, since it is larger than the sum of its proper divisors (1).

130409 is an equidigital number, since it uses as much as digits as its factorization.

130409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 130409 is about 361.1218630878. The cubic root of 130409 is about 50.7110404967.

The spelling of 130409 in words is "one hundred thirty thousand, four hundred nine".