409092121 has 2 divisors, whose sum is σ = 409092122. Its totient is φ = 409092120.

The previous prime is 409092119. The next prime is 409092133. The reversal of 409092121 is 121290904.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402564096 + 6528025 = 20064^2 + 2555^2 .

It is a cyclic number.

It is not a de Polignac number, because 409092121 - 2¹ = 409092119 is a prime.

Together with 409092119, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 409092121.

It is not a weakly prime, because it can be changed into another prime (409092181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204546060 + 204546061.

It is an arithmetic number, because the mean of its divisors is an integer number (204546061).

Almost surely, 2^409092121 is an apocalyptic number.

It is an amenable number.

409092121 is a deficient number, since it is larger than the sum of its proper divisors (1).

409092121 is an equidigital number, since it uses as much as digits as its factorization.

409092121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 409092121 is about 20226.0258330696. The cubic root of 409092121 is about 742.3471377925.

The spelling of 409092121 in words is "four hundred nine million, ninety-two thousand, one hundred twenty-one".