877845149 has 2 divisors, whose sum is σ = 877845150. Its totient is φ = 877845148.

The previous prime is 877845119. The next prime is 877845169. The reversal of 877845149 is 941548778.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656281924 + 221563225 = 25618^2 + 14885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-877845149 is a prime.

It is a super-2 number, since 2×877845149² = 1541224211245664402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 877845149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (877845119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438922574 + 438922575.

It is an arithmetic number, because the mean of its divisors is an integer number (438922575).

Almost surely, 2^877845149 is an apocalyptic number.

It is an amenable number.

877845149 is a deficient number, since it is larger than the sum of its proper divisors (1).

877845149 is an equidigital number, since it uses as much as digits as its factorization.

877845149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 53.

The square root of 877845149 is about 29628.4516807747. The cubic root of 877845149 is about 957.5011505961.

The spelling of 877845149 in words is "eight hundred seventy-seven million, eight hundred forty-five thousand, one hundred forty-nine".