2979728609 has 16 divisors (see below), whose sum is σ = 3520031424. Its totient is φ = 2486635200.

The previous prime is 2979728603. The next prime is 2979728629. The reversal of 2979728609 is 9068279792.

It is a cyclic number.

It is not a de Polignac number, because 2979728609 - 2¹⁶ = 2979663073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2979728603) 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, 31679 + ... + 83444.

It is an arithmetic number, because the mean of its divisors is an integer number (220001964).

Almost surely, 2^2979728609 is an apocalyptic number.

It is an amenable number.

2979728609 is a deficient number, since it is larger than the sum of its proper divisors (540302815).

2979728609 is a wasteful number, since it uses less digits than its factorization.

2979728609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115328.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The square root of 2979728609 is about 54586.8904499972. The cubic root of 2979728609 is about 1438.9937364539.

The spelling of 2979728609 in words is "two billion, nine hundred seventy-nine million, seven hundred twenty-eight thousand, six hundred nine".