402816133 has 2 divisors, whose sum is σ = 402816134. Its totient is φ = 402816132.

The previous prime is 402816121. The next prime is 402816137. The reversal of 402816133 is 331618204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228100609 + 174715524 = 15103^2 + 13218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402816133 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402816137) 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, 201408066 + 201408067.

It is an arithmetic number, because the mean of its divisors is an integer number (201408067).

Almost surely, 2^402816133 is an apocalyptic number.

It is an amenable number.

402816133 is a deficient number, since it is larger than the sum of its proper divisors (1).

402816133 is an equidigital number, since it uses as much as digits as its factorization.

402816133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 402816133 is about 20070.2798435896. The cubic root of 402816133 is about 738.5313781106.

The spelling of 402816133 in words is "four hundred two million, eight hundred sixteen thousand, one hundred thirty-three".