878089972 has 6 divisors (see below), whose sum is σ = 1536657458. Its totient is φ = 439044984.

The previous prime is 878089969. The next prime is 878089981. The reversal of 878089972 is 279980878.

It can be written as a sum of positive squares in only one way, i.e., 860483556 + 17606416 = 29334^2 + 4196^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109761243 + ... + 109761250.

Almost surely, 2^878089972 is an apocalyptic number.

It is an amenable number.

878089972 is a deficient number, since it is larger than the sum of its proper divisors (658567486).

878089972 is a wasteful number, since it uses less digits than its factorization.

878089972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219522497 (or 219522495 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 58.

The square root of 878089972 is about 29632.5829451298. The cubic root of 878089972 is about 957.5901550997.

The spelling of 878089972 in words is "eight hundred seventy-eight million, eighty-nine thousand, nine hundred seventy-two".