82379639 has 2 divisors, whose sum is σ = 82379640. Its totient is φ = 82379638.

The previous prime is 82379623. The next prime is 82379651. The reversal of 82379639 is 93697328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82379639 - 2⁴ = 82379623 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 82379593 and 82379602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82379669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41189819 + 41189820.

It is an arithmetic number, because the mean of its divisors is an integer number (41189820).

Almost surely, 2^82379639 is an apocalyptic number.

82379639 is a deficient number, since it is larger than the sum of its proper divisors (1).

82379639 is an equidigital number, since it uses as much as digits as its factorization.

82379639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The square root of 82379639 is about 9076.3229889642. The cubic root of 82379639 is about 435.1175777643.

The spelling of 82379639 in words is "eighty-two million, three hundred seventy-nine thousand, six hundred thirty-nine".