409245115729 has 2 divisors, whose sum is σ = 409245115730. Its totient is φ = 409245115728.

The previous prime is 409245115673. The next prime is 409245115793. The reversal of 409245115729 is 927511542904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276802254400 + 132442861329 = 526120^2 + 363927^2 .

It is a cyclic number.

It is not a de Polignac number, because 409245115729 - 2³³ = 400655181137 is a prime.

It is not a weakly prime, because it can be changed into another prime (409245115129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204622557864 + 204622557865.

It is an arithmetic number, because the mean of its divisors is an integer number (204622557865).

Almost surely, 2^409245115729 is an apocalyptic number.

It is an amenable number.

409245115729 is a deficient number, since it is larger than the sum of its proper divisors (1).

409245115729 is an equidigital number, since it uses as much as digits as its factorization.

409245115729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 409245115729 in words is "four hundred nine billion, two hundred forty-five million, one hundred fifteen thousand, seven hundred twenty-nine".