405783241 has 2 divisors, whose sum is σ = 405783242. Its totient is φ = 405783240.

The previous prime is 405783239. The next prime is 405783253. The reversal of 405783241 is 142387504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394419600 + 11363641 = 19860^2 + 3371^2 .

It is a cyclic number.

It is not a de Polignac number, because 405783241 - 2¹ = 405783239 is a prime.

Together with 405783239, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 405783197 and 405783206.

It is not a weakly prime, because it can be changed into another prime (405783221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202891620 + 202891621.

It is an arithmetic number, because the mean of its divisors is an integer number (202891621).

Almost surely, 2^405783241 is an apocalyptic number.

It is an amenable number.

405783241 is a deficient number, since it is larger than the sum of its proper divisors (1).

405783241 is an equidigital number, since it uses as much as digits as its factorization.

405783241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 405783241 is about 20144.0621772273. The cubic root of 405783241 is about 740.3402629240.

The spelling of 405783241 in words is "four hundred five million, seven hundred eighty-three thousand, two hundred forty-one".