978828879 has 16 divisors (see below), whose sum is σ = 1506033152. Its totient is φ = 553899168.

The previous prime is 978828869. The next prime is 978828899.

978828879 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 978828879 - 2⁸ = 978828623 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 (978828869) 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, 224104 + ... + 228429.

It is an arithmetic number, because the mean of its divisors is an integer number (94127072).

Almost surely, 2^978828879 is an apocalyptic number.

978828879 is a deficient number, since it is larger than the sum of its proper divisors (527204273).

978828879 is a wasteful number, since it uses less digits than its factorization.

978828879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452646.

The product of its digits is 32514048, while the sum is 66.

The square root of 978828879 is about 31286.2410493814. The cubic root of 978828879 is about 992.8925636948.

The spelling of 978828879 in words is "nine hundred seventy-eight million, eight hundred twenty-eight thousand, eight hundred seventy-nine".