406888697 has 2 divisors, whose sum is σ = 406888698. Its totient is φ = 406888696.

The previous prime is 406888679. The next prime is 406888759. The reversal of 406888697 is 796888604.

Together with previous prime (406888679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251412736 + 155475961 = 15856^2 + 12469^2 .

It is a cyclic number.

It is not a de Polignac number, because 406888697 - 2²⁰ = 405840121 is a prime.

It is not a weakly prime, because it can be changed into another prime (406888597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203444348 + 203444349.

It is an arithmetic number, because the mean of its divisors is an integer number (203444349).

Almost surely, 2^406888697 is an apocalyptic number.

It is an amenable number.

406888697 is a deficient number, since it is larger than the sum of its proper divisors (1).

406888697 is an equidigital number, since it uses as much as digits as its factorization.

406888697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The square root of 406888697 is about 20171.4822707703. The cubic root of 406888697 is about 741.0119446146.

The spelling of 406888697 in words is "four hundred six million, eight hundred eighty-eight thousand, six hundred ninety-seven".