409163801 has 2 divisors, whose sum is σ = 409163802. Its totient is φ = 409163800.

The previous prime is 409163779. The next prime is 409163893. The reversal of 409163801 is 108361904.

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., 352538176 + 56625625 = 18776^2 + 7525^2 .

It is a cyclic number.

It is not a de Polignac number, because 409163801 - 2²² = 404969497 is a prime.

It is not a weakly prime, because it can be changed into another prime (409163101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204581900 + 204581901.

It is an arithmetic number, because the mean of its divisors is an integer number (204581901).

Almost surely, 2^409163801 is an apocalyptic number.

It is an amenable number.

409163801 is a deficient number, since it is larger than the sum of its proper divisors (1).

409163801 is an equidigital number, since it uses as much as digits as its factorization.

409163801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 409163801 is about 20227.7977298568. The cubic root of 409163801 is about 742.3904926040.

The spelling of 409163801 in words is "four hundred nine million, one hundred sixty-three thousand, eight hundred one".