878696149 has 4 divisors (see below), whose sum is σ = 880193664. Its totient is φ = 877198636.

The previous prime is 878696141. The next prime is 878696171. The reversal of 878696149 is 941696878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 878696149 - 2³ = 878696141 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 878696093 and 878696102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878696141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747877 + ... + 749050.

It is an arithmetic number, because the mean of its divisors is an integer number (220048416).

Almost surely, 2^878696149 is an apocalyptic number.

It is an amenable number.

878696149 is a deficient number, since it is larger than the sum of its proper divisors (1497515).

878696149 is a wasteful number, since it uses less digits than its factorization.

878696149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497514.

The product of its digits is 5225472, while the sum is 58.

The square root of 878696149 is about 29642.8093978961. The cubic root of 878696149 is about 957.8104573559.

The spelling of 878696149 in words is "eight hundred seventy-eight million, six hundred ninety-six thousand, one hundred forty-nine".