2969889978 has 16 divisors (see below), whose sum is σ = 6479760096. Its totient is φ = 899966640.

The previous prime is 2969889977. The next prime is 2969890009. The reversal of 2969889978 is 8799889692.

It is not an unprimeable number, because it can be changed into a prime (2969889977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22499101 + ... + 22499232.

It is an arithmetic number, because the mean of its divisors is an integer number (404985006).

Almost surely, 2^2969889978 is an apocalyptic number.

2969889978 is an abundant number, since it is smaller than the sum of its proper divisors (3509870118).

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

2969889978 is a wasteful number, since it uses less digits than its factorization.

2969889978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44998349.

The product of its digits is 282175488, while the sum is 75.

The square root of 2969889978 is about 54496.6969457783. The cubic root of 2969889978 is about 1437.4082073510.

The spelling of 2969889978 in words is "two billion, nine hundred sixty-nine million, eight hundred eighty-nine thousand, nine hundred seventy-eight".