2009977 has 2 divisors, whose sum is σ = 2009978. Its totient is φ = 2009976.

The previous prime is 2009971. The next prime is 2009981. The reversal of 2009977 is 7799002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1929321 + 80656 = 1389^2 + 284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2009977 is a prime.

It is not a weakly prime, because it can be changed into another prime (2009971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004988 + 1004989.

It is an arithmetic number, because the mean of its divisors is an integer number (1004989).

2^2009977 is an apocalyptic number.

It is an amenable number.

2009977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009977 is an equidigital number, since it uses as much as digits as its factorization.

2009977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 2009977 is about 1417.7365763780. The cubic root of 2009977 is about 126.2012614536.

The spelling of 2009977 in words is "two million, nine thousand, nine hundred seventy-seven".