82390009349 has 2 divisors, whose sum is σ = 82390009350. Its totient is φ = 82390009348.

The previous prime is 82390009327. The next prime is 82390009469. The reversal of 82390009349 is 94390009328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81881822500 + 508186849 = 286150^2 + 22543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82390009349 is a prime.

It is a super-2 number, since 2×82390009349² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82390009549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41195004674 + 41195004675.

It is an arithmetic number, because the mean of its divisors is an integer number (41195004675).

Almost surely, 2^82390009349 is an apocalyptic number.

It is an amenable number.

82390009349 is a deficient number, since it is larger than the sum of its proper divisors (1).

82390009349 is an equidigital number, since it uses as much as digits as its factorization.

82390009349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 82390009349 in words is "eighty-two billion, three hundred ninety million, nine thousand, three hundred forty-nine".