8378949 has 8 divisors (see below), whose sum is σ = 11185312. Its totient is φ = 5579280.

The previous prime is 8378893. The next prime is 8378987. The reversal of 8378949 is 9498738.

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

It is not a de Polignac number, because 8378949 - 2⁹ = 8378437 is a prime.

It is a Duffinian number.

8378949 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8378898 and 8378907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8378989) 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, 4002 + ... + 5724.

It is an arithmetic number, because the mean of its divisors is an integer number (1398164).

Almost surely, 2^8378949 is an apocalyptic number.

It is an amenable number.

8378949 is a deficient number, since it is larger than the sum of its proper divisors (2806363).

8378949 is a wasteful number, since it uses less digits than its factorization.

8378949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347.

The product of its digits is 435456, while the sum is 48.

The square root of 8378949 is about 2894.6414285711. The cubic root of 8378949 is about 203.1093185212.

It can be divided in two parts, 83789 and 49, that added together give a palindrome (83838).

The spelling of 8378949 in words is "eight million, three hundred seventy-eight thousand, nine hundred forty-nine".