82379391 has 16 divisors (see below), whose sum is σ = 112472064. Its totient is φ = 53609504.

The previous prime is 82379359. The next prime is 82379441. The reversal of 82379391 is 19397328.

It is a cyclic number.

It is not a de Polignac number, because 82379391 - 2⁵ = 82379359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82371391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95026 + ... + 95888.

It is an arithmetic number, because the mean of its divisors is an integer number (7029504).

Almost surely, 2^82379391 is an apocalyptic number.

82379391 is a deficient number, since it is larger than the sum of its proper divisors (30092673).

82379391 is a wasteful number, since it uses less digits than its factorization.

82379391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590.

The product of its digits is 81648, while the sum is 42.

The square root of 82379391 is about 9076.3093270338. The cubic root of 82379391 is about 435.1171411303.

The spelling of 82379391 in words is "eighty-two million, three hundred seventy-nine thousand, three hundred ninety-one".