605440931 has 2 divisors, whose sum is σ = 605440932. Its totient is φ = 605440930.

The previous prime is 605440883. The next prime is 605440987. The reversal of 605440931 is 139044506.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 605440931 - 2¹⁸ = 605178787 is a prime.

It is a super-2 number, since 2×605440931² = 733117441860293522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (605440331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302720465 + 302720466.

It is an arithmetic number, because the mean of its divisors is an integer number (302720466).

Almost surely, 2^605440931 is an apocalyptic number.

605440931 is a deficient number, since it is larger than the sum of its proper divisors (1).

605440931 is an equidigital number, since it uses as much as digits as its factorization.

605440931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 605440931 is about 24605.7093171483. The cubic root of 605440931 is about 845.9744746736.

The spelling of 605440931 in words is "six hundred five million, four hundred forty thousand, nine hundred thirty-one".