409228513 has 2 divisors, whose sum is σ = 409228514. Its totient is φ = 409228512.

The previous prime is 409228493. The next prime is 409228531. The reversal of 409228513 is 315822904.

Together with next prime (409228531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401922304 + 7306209 = 20048^2 + 2703^2 .

It is a cyclic number.

It is not a de Polignac number, because 409228513 - 2⁵ = 409228481 is a prime.

It is not a weakly prime, because it can be changed into another prime (400228513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204614256 + 204614257.

It is an arithmetic number, because the mean of its divisors is an integer number (204614257).

Almost surely, 2^409228513 is an apocalyptic number.

It is an amenable number.

409228513 is a deficient number, since it is larger than the sum of its proper divisors (1).

409228513 is an equidigital number, since it uses as much as digits as its factorization.

409228513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 409228513 is about 20229.3972475702. The cubic root of 409228513 is about 742.4296285531.

The spelling of 409228513 in words is "four hundred nine million, two hundred twenty-eight thousand, five hundred thirteen".