2009979577 has 2 divisors, whose sum is σ = 2009979578. Its totient is φ = 2009979576.

The previous prime is 2009979553. The next prime is 2009979607. The reversal of 2009979577 is 7759799002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1066936896 + 943042681 = 32664^2 + 30709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2009979577 is a prime.

It is not a weakly prime, because it can be changed into another prime (2009979077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004989788 + 1004989789.

It is an arithmetic number, because the mean of its divisors is an integer number (1004989789).

Almost surely, 2^2009979577 is an apocalyptic number.

It is an amenable number.

2009979577 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009979577 is an equidigital number, since it uses as much as digits as its factorization.

2009979577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2500470, while the sum is 55.

The square root of 2009979577 is about 44832.7957749681. The cubic root of 2009979577 is about 1262.0131538802.

The spelling of 2009979577 in words is "two billion, nine million, nine hundred seventy-nine thousand, five hundred seventy-seven".