82905047 has 2 divisors, whose sum is σ = 82905048. Its totient is φ = 82905046.

The previous prime is 82904981. The next prime is 82905071. The reversal of 82905047 is 74050928.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82905047 - 2¹⁰ = 82904023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82904998 and 82905016.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41452523 + 41452524.

It is an arithmetic number, because the mean of its divisors is an integer number (41452524).

Almost surely, 2^82905047 is an apocalyptic number.

82905047 is a deficient number, since it is larger than the sum of its proper divisors (1).

82905047 is an equidigital number, since it uses as much as digits as its factorization.

82905047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 82905047 is about 9105.2208649763. The cubic root of 82905047 is about 436.0406616259.

The spelling of 82905047 in words is "eighty-two million, nine hundred five thousand, forty-seven".