870877049 has 12 divisors (see below), whose sum is σ = 1013597028. Its totient is φ = 746071200.

The previous prime is 870877039. The next prime is 870877061. The reversal of 870877049 is 940778078.

It can be written as a sum of positive squares in 2 ways, for example, as 558471424 + 312405625 = 23632^2 + 17675^2 .

It is not a de Polignac number, because 870877049 - 2⁸ = 870876793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 870876988 and 870877006.

It is not an unprimeable number, because it can be changed into a prime (870877039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125039 + ... + 131819.

It is an arithmetic number, because the mean of its divisors is an integer number (84466419).

Almost surely, 2^870877049 is an apocalyptic number.

It is an amenable number.

870877049 is a deficient number, since it is larger than the sum of its proper divisors (142719979).

870877049 is a wasteful number, since it uses less digits than its factorization.

870877049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9416 (or 9409 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 50.

The square root of 870877049 is about 29510.6260353792. The cubic root of 870877049 is about 954.9609548833.

The spelling of 870877049 in words is "eight hundred seventy million, eight hundred seventy-seven thousand, forty-nine".