878994513 has 6 divisors (see below), whose sum is σ = 1269658754. Its totient is φ = 585996336.

The previous prime is 878994499. The next prime is 878994521. The reversal of 878994513 is 315499878.

It can be written as a sum of positive squares in only one way, i.e., 471237264 + 407757249 = 21708^2 + 20193^2 .

It is not a de Polignac number, because 878994513 - 2²¹ = 876897361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 878994513.

It is not an unprimeable number, because it can be changed into a prime (878994913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48833020 + ... + 48833037.

Almost surely, 2^878994513 is an apocalyptic number.

It is an amenable number.

878994513 is a deficient number, since it is larger than the sum of its proper divisors (390664241).

878994513 is a wasteful number, since it uses less digits than its factorization.

878994513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97666063 (or 97666060 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 878994513 is about 29647.8416246444. The cubic root of 878994513 is about 957.9188542575.

The spelling of 878994513 in words is "eight hundred seventy-eight million, nine hundred ninety-four thousand, five hundred thirteen".