409472851 has 2 divisors, whose sum is σ = 409472852. Its totient is φ = 409472850.

The previous prime is 409472849. The next prime is 409472873. The reversal of 409472851 is 158274904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409472851 - 2¹ = 409472849 is a prime.

Together with 409472849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (409472881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204736425 + 204736426.

It is an arithmetic number, because the mean of its divisors is an integer number (204736426).

Almost surely, 2^409472851 is an apocalyptic number.

409472851 is a deficient number, since it is larger than the sum of its proper divisors (1).

409472851 is an equidigital number, since it uses as much as digits as its factorization.

409472851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 409472851 is about 20235.4355278062. The cubic root of 409472851 is about 742.5773599331.

The spelling of 409472851 in words is "four hundred nine million, four hundred seventy-two thousand, eight hundred fifty-one".