1009769977 has 2 divisors, whose sum is σ = 1009769978. Its totient is φ = 1009769976.

The previous prime is 1009769951. The next prime is 1009769987. The reversal of 1009769977 is 7799679001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816587776 + 193182201 = 28576^2 + 13899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1009769977 is a prime.

It is a super-4 number, since 4×1009769977⁴ (a number of 37 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1009769947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504884988 + 504884989.

It is an arithmetic number, because the mean of its divisors is an integer number (504884989).

Almost surely, 2^1009769977 is an apocalyptic number.

It is an amenable number.

1009769977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009769977 is an equidigital number, since it uses as much as digits as its factorization.

1009769977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500282, while the sum is 55.

The square root of 1009769977 is about 31776.8780247525. The cubic root of 1009769977 is about 1003.2461103658.

The spelling of 1009769977 in words is "one billion, nine million, seven hundred sixty-nine thousand, nine hundred seventy-seven".