8440785957 has 8 divisors (see below), whose sum is σ = 11916403776. Its totient is φ = 5296179392.

The previous prime is 8440785953. The next prime is 8440785979. The reversal of 8440785957 is 7595870448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8440785957 - 2² = 8440785953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8440785897 and 8440785906.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82752753 + ... + 82752854.

It is an arithmetic number, because the mean of its divisors is an integer number (1489550472).

Almost surely, 2^8440785957 is an apocalyptic number.

It is an amenable number.

8440785957 is a deficient number, since it is larger than the sum of its proper divisors (3475617819).

8440785957 is a wasteful number, since it uses less digits than its factorization.

8440785957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165505627.

The product of its (nonzero) digits is 11289600, while the sum is 57.

The square root of 8440785957 is about 91873.7500976204. The cubic root of 8440785957 is about 2036.0774584294.

The spelling of 8440785957 in words is "eight billion, four hundred forty million, seven hundred eighty-five thousand, nine hundred fifty-seven".