8378985 has 8 divisors (see below), whose sum is σ = 13406400. Its totient is φ = 4468784.

The previous prime is 8378893. The next prime is 8378987. The reversal of 8378985 is 5898738.

It is a happy number.

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 8378985 - 2⁷ = 8378857 is a prime.

8378985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8378987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279285 + ... + 279314.

It is an arithmetic number, because the mean of its divisors is an integer number (1675800).

Almost surely, 2^8378985 is an apocalyptic number.

It is an amenable number.

8378985 is a deficient number, since it is larger than the sum of its proper divisors (5027415).

8378985 is a wasteful number, since it uses less digits than its factorization.

8378985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558607.

The product of its digits is 483840, while the sum is 48.

The square root of 8378985 is about 2894.6476469512. The cubic root of 8378985 is about 203.1096094059.

The spelling of 8378985 in words is "eight million, three hundred seventy-eight thousand, nine hundred eighty-five".