870009873 has 16 divisors (see below), whose sum is σ = 1190950656. Its totient is φ = 564600960.

The previous prime is 870009871. The next prime is 870009923. The reversal of 870009873 is 378900078.

870009873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 870009873 - 2¹ = 870009871 is a prime.

It is a super-2 number, since 2×870009873² = 1513834358234952258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (870009871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49311 + ... + 64587.

It is an arithmetic number, because the mean of its divisors is an integer number (74434416).

Almost surely, 2^870009873 is an apocalyptic number.

It is an amenable number.

870009873 is a deficient number, since it is larger than the sum of its proper divisors (320940783).

870009873 is a wasteful number, since it uses less digits than its factorization.

870009873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15784.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 870009873 is about 29495.9297700547. The cubic root of 870009873 is about 954.6438820961.

The spelling of 870009873 in words is "eight hundred seventy million, nine thousand, eight hundred seventy-three".