82239747 has 8 divisors (see below), whose sum is σ = 109754640. Its totient is φ = 54775680.

The previous prime is 82239719. The next prime is 82239749. The reversal of 82239747 is 74793228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82239747 - 2¹⁴ = 82223363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82239699 and 82239708.

It is not an unprimeable number, because it can be changed into a prime (82239749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8754 + ... + 15527.

It is an arithmetic number, because the mean of its divisors is an integer number (13719330).

Almost surely, 2^82239747 is an apocalyptic number.

82239747 is a deficient number, since it is larger than the sum of its proper divisors (27514893).

82239747 is a wasteful number, since it uses less digits than its factorization.

82239747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25413.

The product of its digits is 169344, while the sum is 42.

The square root of 82239747 is about 9068.6132898035. The cubic root of 82239747 is about 434.8711416450.

The spelling of 82239747 in words is "eighty-two million, two hundred thirty-nine thousand, seven hundred forty-seven".