82009237 has 4 divisors (see below), whose sum is σ = 85574880. Its totient is φ = 78443596.

The previous prime is 82009211. The next prime is 82009259. The reversal of 82009237 is 73290028.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82009237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82009199 and 82009208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82009267) 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, 1782787 + ... + 1782832.

It is an arithmetic number, because the mean of its divisors is an integer number (21393720).

Almost surely, 2^82009237 is an apocalyptic number.

It is an amenable number.

82009237 is a deficient number, since it is larger than the sum of its proper divisors (3565643).

82009237 is a wasteful number, since it uses less digits than its factorization.

82009237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565642.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 82009237 is about 9055.8951517782. The cubic root of 82009237 is about 434.4644609625.

The spelling of 82009237 in words is "eighty-two million, nine thousand, two hundred thirty-seven".