82877149 has 2 divisors, whose sum is σ = 82877150. Its totient is φ = 82877148.

The previous prime is 82877147. The next prime is 82877153. The reversal of 82877149 is 94177828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53392249 + 29484900 = 7307^2 + 5430^2 .

It is a cyclic number.

It is not a de Polignac number, because 82877149 - 2¹ = 82877147 is a prime.

Together with 82877147, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 82877099 and 82877108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82877141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41438574 + 41438575.

It is an arithmetic number, because the mean of its divisors is an integer number (41438575).

Almost surely, 2^82877149 is an apocalyptic number.

It is an amenable number.

82877149 is a deficient number, since it is larger than the sum of its proper divisors (1).

82877149 is an equidigital number, since it uses as much as digits as its factorization.

82877149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 46.

The square root of 82877149 is about 9103.6887578607. The cubic root of 82877149 is about 435.9917461193.

It can be divided in two parts, 828 and 77149, that added together give a palindrome (77977).

The spelling of 82877149 in words is "eighty-two million, eight hundred seventy-seven thousand, one hundred forty-nine".