2978945979 has 8 divisors (see below), whose sum is σ = 4068804432. Its totient is φ = 1937525760.

The previous prime is 2978945939. The next prime is 2978945999. The reversal of 2978945979 is 9795498792.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2978945979 - 2²³ = 2970557371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2978945939) by changing a digit.

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, 12109414 + ... + 12109659.

It is an arithmetic number, because the mean of its divisors is an integer number (508600554).

Almost surely, 2^2978945979 is an apocalyptic number.

2978945979 is a deficient number, since it is larger than the sum of its proper divisors (1089858453).

2978945979 is a wasteful number, since it uses less digits than its factorization.

2978945979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24219117.

The product of its digits is 102876480, while the sum is 69.

The square root of 2978945979 is about 54579.7213166209. The cubic root of 2978945979 is about 1438.8677408315.

The spelling of 2978945979 in words is "two billion, nine hundred seventy-eight million, nine hundred forty-five thousand, nine hundred seventy-nine".