427517317 has 2 divisors, whose sum is σ = 427517318. Its totient is φ = 427517316.

The previous prime is 427517297. The next prime is 427517327. The reversal of 427517317 is 713715724.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427414276 + 103041 = 20674^2 + 321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427517317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427517327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213758658 + 213758659.

It is an arithmetic number, because the mean of its divisors is an integer number (213758659).

Almost surely, 2^427517317 is an apocalyptic number.

It is an amenable number.

427517317 is a deficient number, since it is larger than the sum of its proper divisors (1).

427517317 is an equidigital number, since it uses as much as digits as its factorization.

427517317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41160, while the sum is 37.

The square root of 427517317 is about 20676.4918929687. The cubic root of 427517317 is about 753.3287988650.

The spelling of 427517317 in words is "four hundred twenty-seven million, five hundred seventeen thousand, three hundred seventeen".