406012289 has 2 divisors, whose sum is σ = 406012290. Its totient is φ = 406012288.

The previous prime is 406012253. The next prime is 406012331. The reversal of 406012289 is 982210604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302481664 + 103530625 = 17392^2 + 10175^2 .

It is a cyclic number.

It is not a de Polignac number, because 406012289 - 2¹⁶ = 405946753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (406012219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203006144 + 203006145.

It is an arithmetic number, because the mean of its divisors is an integer number (203006145).

Almost surely, 2^406012289 is an apocalyptic number.

It is an amenable number.

406012289 is a deficient number, since it is larger than the sum of its proper divisors (1).

406012289 is an equidigital number, since it uses as much as digits as its factorization.

406012289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 406012289 is about 20149.7466237171. The cubic root of 406012289 is about 740.4795339630.

The spelling of 406012289 in words is "four hundred six million, twelve thousand, two hundred eighty-nine".