82076989 has 8 divisors (see below), whose sum is σ = 87203160. Its totient is φ = 77103936.

The previous prime is 82076983. The next prime is 82076999. The reversal of 82076989 is 98967028.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13468900 + 68608089 = 3670^2 + 8283^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82076989 is a prime.

It is a super-2 number, since 2×82076989² = 13473264246612242, 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 (82076983) 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, 37174 + ... + 39319.

It is an arithmetic number, because the mean of its divisors is an integer number (10900395).

Almost surely, 2^82076989 is an apocalyptic number.

It is an amenable number.

82076989 is a deficient number, since it is larger than the sum of its proper divisors (5126171).

82076989 is a wasteful number, since it uses less digits than its factorization.

82076989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76559.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 82076989 is about 9059.6351471789. The cubic root of 82076989 is about 434.5840724226.

The spelling of 82076989 in words is "eighty-two million, seventy-six thousand, nine hundred eighty-nine".