409280497 has 2 divisors, whose sum is σ = 409280498. Its totient is φ = 409280496.

The previous prime is 409280477. The next prime is 409280551. The reversal of 409280497 is 794082904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227677921 + 181602576 = 15089^2 + 13476^2 .

It is a cyclic number.

It is not a de Polignac number, because 409280497 - 2²³ = 400891889 is a prime.

It is not a weakly prime, because it can be changed into another prime (409280437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204640248 + 204640249.

It is an arithmetic number, because the mean of its divisors is an integer number (204640249).

Almost surely, 2^409280497 is an apocalyptic number.

It is an amenable number.

409280497 is a deficient number, since it is larger than the sum of its proper divisors (1).

409280497 is an equidigital number, since it uses as much as digits as its factorization.

409280497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 409280497 is about 20230.6820695695. The cubic root of 409280497 is about 742.4610639871.

The spelling of 409280497 in words is "four hundred nine million, two hundred eighty thousand, four hundred ninety-seven".