870981883 has 4 divisors (see below), whose sum is σ = 879605568. Its totient is φ = 862358200.

The previous prime is 870981847. The next prime is 870981931. The reversal of 870981883 is 388189078.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-870981883 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 870981883.

It is not an unprimeable number, because it can be changed into a prime (870981803) 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 3 ways as a sum of consecutive naturals, for example, 4311691 + ... + 4311892.

It is an arithmetic number, because the mean of its divisors is an integer number (219901392).

Almost surely, 2^870981883 is an apocalyptic number.

870981883 is a deficient number, since it is larger than the sum of its proper divisors (8623685).

870981883 is a wasteful number, since it uses less digits than its factorization.

870981883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8623684.

The product of its (nonzero) digits is 774144, while the sum is 52.

The square root of 870981883 is about 29512.4021895880. The cubic root of 870981883 is about 954.9992719492. Note that the first 3 decimals are identical.

The spelling of 870981883 in words is "eight hundred seventy million, nine hundred eighty-one thousand, eight hundred eighty-three".