878988853 has 4 divisors (see below), whose sum is σ = 881138380. Its totient is φ = 876839328.

The previous prime is 878988829. The next prime is 878988863. The reversal of 878988853 is 358889878.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 537219684 + 341769169 = 23178^2 + 18487^2 .

It is a cyclic number.

It is not a de Polignac number, because 878988853 - 2⁵ = 878988821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878988863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074150 + ... + 1074967.

It is an arithmetic number, because the mean of its divisors is an integer number (220284595).

Almost surely, 2^878988853 is an apocalyptic number.

It is an amenable number.

878988853 is a deficient number, since it is larger than the sum of its proper divisors (2149527).

878988853 is a wasteful number, since it uses less digits than its factorization.

878988853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149526.

The product of its digits is 30965760, while the sum is 64.

The square root of 878988853 is about 29647.7461706619. The cubic root of 878988853 is about 957.9167981838.

The spelling of 878988853 in words is "eight hundred seventy-eight million, nine hundred eighty-eight thousand, eight hundred fifty-three".