877866149 has 2 divisors, whose sum is σ = 877866150. Its totient is φ = 877866148.

The previous prime is 877866137. The next prime is 877866161. The reversal of 877866149 is 941668778.

It is a balanced prime because it is at equal distance from previous prime (877866137) and next prime (877866161).

It can be written as a sum of positive squares in only one way, i.e., 492529249 + 385336900 = 22193^2 + 19630^2 .

It is a cyclic number.

It is not a de Polignac number, because 877866149 - 2⁸ = 877865893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 877866094 and 877866103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (877866749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438933074 + 438933075.

It is an arithmetic number, because the mean of its divisors is an integer number (438933075).

Almost surely, 2^877866149 is an apocalyptic number.

It is an amenable number.

877866149 is a deficient number, since it is larger than the sum of its proper divisors (1).

877866149 is an equidigital number, since it uses as much as digits as its factorization.

877866149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The square root of 877866149 is about 29628.8060677443. The cubic root of 877866149 is about 957.5087857179.

The spelling of 877866149 in words is "eight hundred seventy-seven million, eight hundred sixty-six thousand, one hundred forty-nine".