878609490 has 32 divisors (see below), whose sum is σ = 2300360256. Its totient is φ = 212996160.

The previous prime is 878609489. The next prime is 878609509. The reversal of 878609490 is 94906878.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330897 + ... + 1331556.

It is an arithmetic number, because the mean of its divisors is an integer number (71886258).

Almost surely, 2^878609490 is an apocalyptic number.

878609490 is an abundant number, since it is smaller than the sum of its proper divisors (1421750766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

878609490 is a wasteful number, since it uses less digits than its factorization.

878609490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662474.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 878609490 is about 29641.3476414282. The cubic root of 878609490 is about 957.7789691768.

The spelling of 878609490 in words is "eight hundred seventy-eight million, six hundred nine thousand, four hundred ninety".