840358133 has 2 divisors, whose sum is σ = 840358134. Its totient is φ = 840358132.

The previous prime is 840358117. The next prime is 840358157. The reversal of 840358133 is 331853048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 759663844 + 80694289 = 27562^2 + 8983^2 .

It is a cyclic number.

It is not a de Polignac number, because 840358133 - 2⁴ = 840358117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 840358093 and 840358102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840358193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420179066 + 420179067.

It is an arithmetic number, because the mean of its divisors is an integer number (420179067).

Almost surely, 2^840358133 is an apocalyptic number.

It is an amenable number.

840358133 is a deficient number, since it is larger than the sum of its proper divisors (1).

840358133 is an equidigital number, since it uses as much as digits as its factorization.

840358133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 840358133 is about 28988.9312152070. The cubic root of 840358133 is about 943.6728692253.

The spelling of 840358133 in words is "eight hundred forty million, three hundred fifty-eight thousand, one hundred thirty-three".