879961140 has 144 divisors (see below), whose sum is σ = 2949343488. Its totient is φ = 211233792.

The previous prime is 879961129. The next prime is 879961151. The reversal of 879961140 is 41169978.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (879961129) and next prime (879961151).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64129 + ... + 76631.

It is an arithmetic number, because the mean of its divisors is an integer number (20481552).

Almost surely, 2^879961140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 879961140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474671744).

879961140 is an abundant number, since it is smaller than the sum of its proper divisors (2069382348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

879961140 is a wasteful number, since it uses less digits than its factorization.

879961140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12558 (or 12553 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 879961140 is about 29664.1389559852. The cubic root of 879961140 is about 958.2698655553.

The spelling of 879961140 in words is "eight hundred seventy-nine million, nine hundred sixty-one thousand, one hundred forty".