82239451 has 16 divisors (see below), whose sum is σ = 96526080. Its totient is φ = 68611680.

The previous prime is 82239433. The next prime is 82239457. The reversal of 82239451 is 15493228.

It is a cyclic number.

It is not a de Polignac number, because 82239451 - 2⁷ = 82239323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82239457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43261 + ... + 45121.

It is an arithmetic number, because the mean of its divisors is an integer number (6032880).

Almost surely, 2^82239451 is an apocalyptic number.

82239451 is a deficient number, since it is larger than the sum of its proper divisors (14286629).

82239451 is a wasteful number, since it uses less digits than its factorization.

82239451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034.

The product of its digits is 17280, while the sum is 34.

The square root of 82239451 is about 9068.5969697633. The cubic root of 82239451 is about 434.8706199102.

The spelling of 82239451 in words is "eighty-two million, two hundred thirty-nine thousand, four hundred fifty-one".