879499994978 has 16 divisors (see below), whose sum is σ = 1448712820800. Its totient is φ = 397125222000.

The previous prime is 879499994969. The next prime is 879499995013.

879499994978 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132371753 + ... + 132378396.

It is an arithmetic number, because the mean of its divisors is an integer number (90544551300).

Almost surely, 2^879499994978 is an apocalyptic number.

879499994978 is a deficient number, since it is larger than the sum of its proper divisors (569212825822).

879499994978 is a wasteful number, since it uses less digits than its factorization.

879499994978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264750313.

The product of its digits is 26665583616, while the sum is 92.

The spelling of 879499994978 in words is "eight hundred seventy-nine billion, four hundred ninety-nine million, nine hundred ninety-four thousand, nine hundred seventy-eight".