415640273 has 2 divisors, whose sum is σ = 415640274. Its totient is φ = 415640272.

The previous prime is 415640243. The next prime is 415640297. The reversal of 415640273 is 372046514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295255489 + 120384784 = 17183^2 + 10972^2 .

It is a cyclic number.

It is not a de Polignac number, because 415640273 - 2¹⁰ = 415639249 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 (415640213) 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, 207820136 + 207820137.

It is an arithmetic number, because the mean of its divisors is an integer number (207820137).

Almost surely, 2^415640273 is an apocalyptic number.

It is an amenable number.

415640273 is a deficient number, since it is larger than the sum of its proper divisors (1).

415640273 is an equidigital number, since it uses as much as digits as its factorization.

415640273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 415640273 is about 20387.2576135193. The cubic root of 415640273 is about 746.2869954266.

Adding to 415640273 its reverse (372046514), we get a palindrome (787686787).

The spelling of 415640273 in words is "four hundred fifteen million, six hundred forty thousand, two hundred seventy-three".