82347439 has 8 divisors (see below), whose sum is σ = 90004608. Its totient is φ = 75002880.

The previous prime is 82347409. The next prime is 82347457. The reversal of 82347439 is 93474328.

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

It is a cyclic number.

It is not a de Polignac number, because 82347439 - 2¹⁹ = 81823151 is a prime.

It is a super-2 number, since 2×82347439² = 13562201419717442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82347409) 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, 77602 + ... + 78655.

It is an arithmetic number, because the mean of its divisors is an integer number (11250576).

Almost surely, 2^82347439 is an apocalyptic number.

82347439 is a deficient number, since it is larger than the sum of its proper divisors (7657169).

82347439 is a wasteful number, since it uses less digits than its factorization.

82347439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156305.

The product of its digits is 145152, while the sum is 40.

The square root of 82347439 is about 9074.5489695081. The cubic root of 82347439 is about 435.0608784308.

The spelling of 82347439 in words is "eighty-two million, three hundred forty-seven thousand, four hundred thirty-nine".