886378649 has 8 divisors (see below), whose sum is σ = 987477960. Its totient is φ = 789981696.

The previous prime is 886378637. The next prime is 886378673. The reversal of 886378649 is 946873688.

It can be written as a sum of positive squares in 4 ways, for example, as 197683600 + 688695049 = 14060^2 + 26243^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-886378649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (886378699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175192 + ... + 1175945.

It is an arithmetic number, because the mean of its divisors is an integer number (123434745).

Almost surely, 2^886378649 is an apocalyptic number.

It is an amenable number.

886378649 is a deficient number, since it is larger than the sum of its proper divisors (101099311).

886378649 is a wasteful number, since it uses less digits than its factorization.

886378649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351179.

The product of its digits is 13934592, while the sum is 59.

The square root of 886378649 is about 29772.1119338216. Note that the first 3 decimals coincide. The cubic root of 886378649 is about 960.5937620938.

The spelling of 886378649 in words is "eight hundred eighty-six million, three hundred seventy-eight thousand, six hundred forty-nine".