405530039 has 2 divisors, whose sum is σ = 405530040. Its totient is φ = 405530038.

The previous prime is 405530017. The next prime is 405530077. The reversal of 405530039 is 930035504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405530039 - 2²⁴ = 388752823 is a prime.

It is a super-2 number, since 2×405530039² = 328909225062683042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405529993 and 405530020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405530009) 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, 202765019 + 202765020.

It is an arithmetic number, because the mean of its divisors is an integer number (202765020).

Almost surely, 2^405530039 is an apocalyptic number.

405530039 is a deficient number, since it is larger than the sum of its proper divisors (1).

405530039 is an equidigital number, since it uses as much as digits as its factorization.

405530039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 405530039 is about 20137.7764164766. The cubic root of 405530039 is about 740.1862442103.

The spelling of 405530039 in words is "four hundred five million, five hundred thirty thousand, thirty-nine".