870749947079 has 4 divisors (see below), whose sum is σ = 870781607184. Its totient is φ = 870718286976.

The previous prime is 870749947069. The next prime is 870749947087. The reversal of 870749947079 is 970749947078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970749947078 = 2 ⋅485374973539.

It is a cyclic number.

It is not a de Polignac number, because 870749947079 - 2³² = 866454979783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870749947069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15788762 + ... + 15843815.

It is an arithmetic number, because the mean of its divisors is an integer number (217695401796).

Almost surely, 2^870749947079 is an apocalyptic number.

870749947079 is a deficient number, since it is larger than the sum of its proper divisors (31660105).

870749947079 is a wasteful number, since it uses less digits than its factorization.

870749947079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31660104.

The product of its (nonzero) digits is 224042112, while the sum is 71.

Subtracting 870749947079 from its reverse (970749947078), we obtain a palindrome (99999999999).

It can be divided in two parts, 8707499 and 47079, that added together give a palindrome (8754578).

The spelling of 870749947079 in words is "eight hundred seventy billion, seven hundred forty-nine million, nine hundred forty-seven thousand, seventy-nine".