82013447 has 4 divisors (see below), whose sum is σ = 82074216. Its totient is φ = 81952680.

The previous prime is 82013431. The next prime is 82013471. The reversal of 82013447 is 74431028.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82013447 - 2⁴ = 82013431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82013417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28313 + ... + 31074.

It is an arithmetic number, because the mean of its divisors is an integer number (20518554).

Almost surely, 2^82013447 is an apocalyptic number.

82013447 is a deficient number, since it is larger than the sum of its proper divisors (60769).

82013447 is a wasteful number, since it uses less digits than its factorization.

82013447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60768.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 82013447 is about 9056.1275940658. The cubic root of 82013447 is about 434.4718953449.

The spelling of 82013447 in words is "eighty-two million, thirteen thousand, four hundred forty-seven".