415240247 has 2 divisors, whose sum is σ = 415240248. Its totient is φ = 415240246.

The previous prime is 415240211. The next prime is 415240271. The reversal of 415240247 is 742042514.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 415240247 - 2⁸ = 415239991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (415240747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207620123 + 207620124.

It is an arithmetic number, because the mean of its divisors is an integer number (207620124).

Almost surely, 2^415240247 is an apocalyptic number.

415240247 is a deficient number, since it is larger than the sum of its proper divisors (1).

415240247 is an equidigital number, since it uses as much as digits as its factorization.

415240247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 415240247 is about 20377.4445650086. Note that the first 3 decimals coincide. The cubic root of 415240247 is about 746.0475014496.

The spelling of 415240247 in words is "four hundred fifteen million, two hundred forty thousand, two hundred forty-seven".