409129079 has 2 divisors, whose sum is σ = 409129080. Its totient is φ = 409129078.

The previous prime is 409129003. The next prime is 409129099. The reversal of 409129079 is 970921904.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 409129079 - 2⁸ = 409128823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409129099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204564539 + 204564540.

It is an arithmetic number, because the mean of its divisors is an integer number (204564540).

Almost surely, 2^409129079 is an apocalyptic number.

409129079 is a deficient number, since it is larger than the sum of its proper divisors (1).

409129079 is an equidigital number, since it uses as much as digits as its factorization.

409129079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 409129079 is about 20226.9394372950. The cubic root of 409129079 is about 742.3694920399.

The spelling of 409129079 in words is "four hundred nine million, one hundred twenty-nine thousand, seventy-nine".