977848009 has 2 divisors, whose sum is σ = 977848010. Its totient is φ = 977848008.

The previous prime is 977847989. The next prime is 977848103. The reversal of 977848009 is 900848779.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 547700409 + 430147600 = 23403^2 + 20740^2 .

It is a cyclic number.

It is not a de Polignac number, because 977848009 - 2⁷ = 977847881 is a prime.

It is not a weakly prime, because it can be changed into another prime (977848609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488924004 + 488924005.

It is an arithmetic number, because the mean of its divisors is an integer number (488924005).

Almost surely, 2^977848009 is an apocalyptic number.

It is an amenable number.

977848009 is a deficient number, since it is larger than the sum of its proper divisors (1).

977848009 is an equidigital number, since it uses as much as digits as its factorization.

977848009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 977848009 is about 31270.5613796747. The cubic root of 977848009 is about 992.5607985140.

The spelling of 977848009 in words is "nine hundred seventy-seven million, eight hundred forty-eight thousand, nine".