417290987 has 2 divisors, whose sum is σ = 417290988. Its totient is φ = 417290986.

The previous prime is 417290981. The next prime is 417291023. The reversal of 417290987 is 789092714.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 417290987 - 2⁴ = 417290971 is a prime.

It is not a weakly prime, because it can be changed into another prime (417290981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208645493 + 208645494.

It is an arithmetic number, because the mean of its divisors is an integer number (208645494).

Almost surely, 2^417290987 is an apocalyptic number.

417290987 is a deficient number, since it is larger than the sum of its proper divisors (1).

417290987 is an equidigital number, since it uses as much as digits as its factorization.

417290987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 417290987 is about 20427.7014614959. The cubic root of 417290987 is about 747.2736492092.

It can be divided in two parts, 4172 and 90987, that added together give a palindrome (95159).

The spelling of 417290987 in words is "four hundred seventeen million, two hundred ninety thousand, nine hundred eighty-seven".