82743893 has 2 divisors, whose sum is σ = 82743894. Its totient is φ = 82743892.

The previous prime is 82743887. The next prime is 82743979. The reversal of 82743893 is 39834728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72965764 + 9778129 = 8542^2 + 3127^2 .

It is a cyclic number.

It is not a de Polignac number, because 82743893 - 2²⁶ = 15635029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82743833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41371946 + 41371947.

It is an arithmetic number, because the mean of its divisors is an integer number (41371947).

Almost surely, 2^82743893 is an apocalyptic number.

It is an amenable number.

82743893 is a deficient number, since it is larger than the sum of its proper divisors (1).

82743893 is an equidigital number, since it uses as much as digits as its factorization.

82743893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 82743893 is about 9096.3670220589. The cubic root of 82743893 is about 435.7579475269.

It can be divided in two parts, 8274 and 3893, that added together give a cube (12167 = 23³).

The spelling of 82743893 in words is "eighty-two million, seven hundred forty-three thousand, eight hundred ninety-three".