878949 has 12 divisors (see below), whose sum is σ = 1291212. Its totient is φ = 576000.

The previous prime is 878939. The next prime is 878953. The reversal of 878949 is 949878.

It can be written as a sum of positive squares in 2 ways, for example, as 497025 + 381924 = 705^2 + 618^2 .

It is not a de Polignac number, because 878949 - 2⁷ = 878821 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252 + ... + 1349.

It is an arithmetic number, because the mean of its divisors is an integer number (107601).

2⁸⁷⁸⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

878949 is a deficient number, since it is larger than the sum of its proper divisors (412263).

878949 is a wasteful number, since it uses less digits than its factorization.

878949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668 (or 1665 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 878949 is about 937.5227997228. The cubic root of 878949 is about 95.7902320778.

The spelling of 878949 in words is "eight hundred seventy-eight thousand, nine hundred forty-nine".