82717399 has 2 divisors, whose sum is σ = 82717400. Its totient is φ = 82717398.

The previous prime is 82717379. The next prime is 82717409. The reversal of 82717399 is 99371728.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82717399 - 2¹⁵ = 82684631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82717339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41358699 + 41358700.

It is an arithmetic number, because the mean of its divisors is an integer number (41358700).

Almost surely, 2^82717399 is an apocalyptic number.

82717399 is a deficient number, since it is larger than the sum of its proper divisors (1).

82717399 is an equidigital number, since it uses as much as digits as its factorization.

82717399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 46.

The square root of 82717399 is about 9094.9106097861. The cubic root of 82717399 is about 435.7114337075.

The spelling of 82717399 in words is "eighty-two million, seven hundred seventeen thousand, three hundred ninety-nine".