877507949 has 2 divisors, whose sum is σ = 877507950. Its totient is φ = 877507948.

The previous prime is 877507931. The next prime is 877507991. The reversal of 877507949 is 949705778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 500953924 + 376554025 = 22382^2 + 19405^2 .

It is a cyclic number.

It is not a de Polignac number, because 877507949 - 2¹⁶ = 877442413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 877507894 and 877507903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (877507999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438753974 + 438753975.

It is an arithmetic number, because the mean of its divisors is an integer number (438753975).

Almost surely, 2^877507949 is an apocalyptic number.

It is an amenable number.

877507949 is a deficient number, since it is larger than the sum of its proper divisors (1).

877507949 is an equidigital number, since it uses as much as digits as its factorization.

877507949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4445280, while the sum is 56.

The square root of 877507949 is about 29622.7606579805. The cubic root of 877507949 is about 957.3785356765.

The spelling of 877507949 in words is "eight hundred seventy-seven million, five hundred seven thousand, nine hundred forty-nine".