840119286989 has 2 divisors, whose sum is σ = 840119286990. Its totient is φ = 840119286988.

The previous prime is 840119286961. The next prime is 840119287003. The reversal of 840119286989 is 989682911048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 760331680900 + 79787606089 = 871970^2 + 282467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840119286989 is a prime.

It is a super-2 number, since 2×840119286989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840119280989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420059643494 + 420059643495.

It is an arithmetic number, because the mean of its divisors is an integer number (420059643495).

Almost surely, 2^840119286989 is an apocalyptic number.

It is an amenable number.

840119286989 is a deficient number, since it is larger than the sum of its proper divisors (1).

840119286989 is an equidigital number, since it uses as much as digits as its factorization.

840119286989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17915904, while the sum is 65.

The spelling of 840119286989 in words is "eight hundred forty billion, one hundred nineteen million, two hundred eighty-six thousand, nine hundred eighty-nine".