406040029 has 2 divisors, whose sum is σ = 406040030. Its totient is φ = 406040028.

The previous prime is 406040023. The next prime is 406040059. The reversal of 406040029 is 920040604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399800025 + 6240004 = 19995^2 + 2498^2 .

It is a cyclic number.

It is not a de Polignac number, because 406040029 - 2³ = 406040021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 406039985 and 406040012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406040021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203020014 + 203020015.

It is an arithmetic number, because the mean of its divisors is an integer number (203020015).

Almost surely, 2^406040029 is an apocalyptic number.

It is an amenable number.

406040029 is a deficient number, since it is larger than the sum of its proper divisors (1).

406040029 is an equidigital number, since it uses as much as digits as its factorization.

406040029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 406040029 is about 20150.4349580847. The cubic root of 406040029 is about 740.4963975203.

The spelling of 406040029 in words is "four hundred six million, forty thousand, twenty-nine".