82404149 has 2 divisors, whose sum is σ = 82404150. Its totient is φ = 82404148.

The previous prime is 82404131. The next prime is 82404163. The reversal of 82404149 is 94140428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51122500 + 31281649 = 7150^2 + 5593^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82404149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82404649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41202074 + 41202075.

It is an arithmetic number, because the mean of its divisors is an integer number (41202075).

Almost surely, 2^82404149 is an apocalyptic number.

It is an amenable number.

82404149 is a deficient number, since it is larger than the sum of its proper divisors (1).

82404149 is an equidigital number, since it uses as much as digits as its factorization.

82404149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 82404149 is about 9077.6731049317. The cubic root of 82404149 is about 435.1607262674.

The spelling of 82404149 in words is "eighty-two million, four hundred four thousand, one hundred forty-nine".