840890201769 has 16 divisors (see below), whose sum is σ = 1245862224000. Its totient is φ = 560548934928.

The previous prime is 840890201729. The next prime is 840890201777. The reversal of 840890201769 is 967102098048.

It is not a de Polignac number, because 840890201769 - 2¹² = 840890197673 is a prime.

It is a super-2 number, since 2×840890201769² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (840890201729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 889069 + ... + 1572330.

It is an arithmetic number, because the mean of its divisors is an integer number (77866389000).

Almost surely, 2^840890201769 is an apocalyptic number.

It is an amenable number.

840890201769 is a deficient number, since it is larger than the sum of its proper divisors (404972022231).

840890201769 is a wasteful number, since it uses less digits than its factorization.

840890201769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474061 (or 2474055 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 840890201769 in words is "eight hundred forty billion, eight hundred ninety million, two hundred one thousand, seven hundred sixty-nine".