402823117 has 2 divisors, whose sum is σ = 402823118. Its totient is φ = 402823116.

The previous prime is 402823103. The next prime is 402823151. The reversal of 402823117 is 711328204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335402596 + 67420521 = 18314^2 + 8211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402823117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402821117) 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, 201411558 + 201411559.

It is an arithmetic number, because the mean of its divisors is an integer number (201411559).

Almost surely, 2^402823117 is an apocalyptic number.

It is an amenable number.

402823117 is a deficient number, since it is larger than the sum of its proper divisors (1).

402823117 is an equidigital number, since it uses as much as digits as its factorization.

402823117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 402823117 is about 20070.4538314409. The cubic root of 402823117 is about 738.5356462889.

The spelling of 402823117 in words is "four hundred two million, eight hundred twenty-three thousand, one hundred seventeen".