8440785959 has 4 divisors (see below), whose sum is σ = 8441989104. Its totient is φ = 8439582816.

The previous prime is 8440785953. The next prime is 8440785979. The reversal of 8440785959 is 9595870448.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8440785959 - 2⁴ = 8440785943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8440785898 and 8440785907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8440785953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590987 + ... + 605100.

It is an arithmetic number, because the mean of its divisors is an integer number (2110497276).

Almost surely, 2^8440785959 is an apocalyptic number.

8440785959 is a deficient number, since it is larger than the sum of its proper divisors (1203145).

8440785959 is a wasteful number, since it uses less digits than its factorization.

8440785959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203144.

The product of its (nonzero) digits is 14515200, while the sum is 59.

The square root of 8440785959 is about 91873.7501085049. The cubic root of 8440785959 is about 2036.0774585902.

The spelling of 8440785959 in words is "eight billion, four hundred forty million, seven hundred eighty-five thousand, nine hundred fifty-nine".