82399379 has 2 divisors, whose sum is σ = 82399380. Its totient is φ = 82399378.

The previous prime is 82399367. The next prime is 82399399. The reversal of 82399379 is 97399328.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82399379 - 2¹² = 82395283 is a prime.

It is not a weakly prime, because it can be changed into another prime (82399399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41199689 + 41199690.

It is an arithmetic number, because the mean of its divisors is an integer number (41199690).

Almost surely, 2^82399379 is an apocalyptic number.

82399379 is a deficient number, since it is larger than the sum of its proper divisors (1).

82399379 is an equidigital number, since it uses as much as digits as its factorization.

82399379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 50.

The square root of 82399379 is about 9077.4103686018. The cubic root of 82399379 is about 435.1523296161.

The spelling of 82399379 in words is "eighty-two million, three hundred ninety-nine thousand, three hundred seventy-nine".