82009393 has 2 divisors, whose sum is σ = 82009394. Its totient is φ = 82009392.

The previous prime is 82009381. The next prime is 82009399. The reversal of 82009393 is 39390028.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65092624 + 16916769 = 8068^2 + 4113^2 .

It is a cyclic number.

It is not a de Polignac number, because 82009393 - 2¹³ = 82001201 is a prime.

It is not a weakly prime, because it can be changed into another prime (82009399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41004696 + 41004697.

It is an arithmetic number, because the mean of its divisors is an integer number (41004697).

Almost surely, 2^82009393 is an apocalyptic number.

It is an amenable number.

82009393 is a deficient number, since it is larger than the sum of its proper divisors (1).

82009393 is an equidigital number, since it uses as much as digits as its factorization.

82009393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 82009393 is about 9055.9037649480. The cubic root of 82009393 is about 434.4647364454.

The spelling of 82009393 in words is "eighty-two million, nine thousand, three hundred ninety-three".