409948079 has 2 divisors, whose sum is σ = 409948080. Its totient is φ = 409948078.

The previous prime is 409948037. The next prime is 409948109. The reversal of 409948079 is 970849904.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409948079 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409944079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204974039 + 204974040.

It is an arithmetic number, because the mean of its divisors is an integer number (204974040).

Almost surely, 2^409948079 is an apocalyptic number.

409948079 is a deficient number, since it is larger than the sum of its proper divisors (1).

409948079 is an equidigital number, since it uses as much as digits as its factorization.

409948079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 409948079 is about 20247.1745930142. The cubic root of 409948079 is about 742.8645235548.

The spelling of 409948079 in words is "four hundred nine million, nine hundred forty-eight thousand, seventy-nine".