878531099 has 2 divisors, whose sum is σ = 878531100. Its totient is φ = 878531098.

The previous prime is 878531081. The next prime is 878531107. The reversal of 878531099 is 990135878.

878531099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878531099 is a prime.

It is not a weakly prime, because it can be changed into another prime (878531999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439265549 + 439265550.

It is an arithmetic number, because the mean of its divisors is an integer number (439265550).

Almost surely, 2^878531099 is an apocalyptic number.

878531099 is a deficient number, since it is larger than the sum of its proper divisors (1).

878531099 is an equidigital number, since it uses as much as digits as its factorization.

878531099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 878531099 is about 29640.0252867638. The cubic root of 878531099 is about 957.7504834520.

The spelling of 878531099 in words is "eight hundred seventy-eight million, five hundred thirty-one thousand, ninety-nine".