82019477 has 2 divisors, whose sum is σ = 82019478. Its totient is φ = 82019476.

The previous prime is 82019471. The next prime is 82019501. The reversal of 82019477 is 77491028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70123876 + 11895601 = 8374^2 + 3449^2 .

It is a cyclic number.

It is not a de Polignac number, because 82019477 - 2²⁶ = 14910613 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82019477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82019471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41009738 + 41009739.

It is an arithmetic number, because the mean of its divisors is an integer number (41009739).

Almost surely, 2^82019477 is an apocalyptic number.

It is an amenable number.

82019477 is a deficient number, since it is larger than the sum of its proper divisors (1).

82019477 is an equidigital number, since it uses as much as digits as its factorization.

82019477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 82019477 is about 9056.4605117010. The cubic root of 82019477 is about 434.4825431977.

The spelling of 82019477 in words is "eighty-two million, nineteen thousand, four hundred seventy-seven".