405920539 has 2 divisors, whose sum is σ = 405920540. Its totient is φ = 405920538.

The previous prime is 405920533. The next prime is 405920549. The reversal of 405920539 is 935029504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405920539 - 2⁵ = 405920507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405920498 and 405920507.

It is not a weakly prime, because it can be changed into another prime (405920533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202960269 + 202960270.

It is an arithmetic number, because the mean of its divisors is an integer number (202960270).

Almost surely, 2^405920539 is an apocalyptic number.

405920539 is a deficient number, since it is larger than the sum of its proper divisors (1).

405920539 is an equidigital number, since it uses as much as digits as its factorization.

405920539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 405920539 is about 20147.4697915148. The cubic root of 405920539 is about 740.4237523054.

The spelling of 405920539 in words is "four hundred five million, nine hundred twenty thousand, five hundred thirty-nine".