840100727 has 2 divisors, whose sum is σ = 840100728. Its totient is φ = 840100726.

The previous prime is 840100699. The next prime is 840100741. The reversal of 840100727 is 727001048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 840100727 - 2²⁴ = 823323511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 840100727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840100627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420050363 + 420050364.

It is an arithmetic number, because the mean of its divisors is an integer number (420050364).

Almost surely, 2^840100727 is an apocalyptic number.

840100727 is a deficient number, since it is larger than the sum of its proper divisors (1).

840100727 is an equidigital number, since it uses as much as digits as its factorization.

840100727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 840100727 is about 28984.4911461285. The cubic root of 840100727 is about 943.5765087751.

The spelling of 840100727 in words is "eight hundred forty million, one hundred thousand, seven hundred twenty-seven".