82775444 has 6 divisors (see below), whose sum is σ = 144857034. Its totient is φ = 41387720.

The previous prime is 82775411. The next prime is 82775447. The reversal of 82775444 is 44457728.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 63520900 + 19254544 = 7970^2 + 4388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82775447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10346927 + ... + 10346934.

It is an arithmetic number, because the mean of its divisors is an integer number (24142839).

Almost surely, 2^82775444 is an apocalyptic number.

It is an amenable number.

82775444 is a deficient number, since it is larger than the sum of its proper divisors (62081590).

82775444 is a wasteful number, since it uses less digits than its factorization.

82775444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20693865 (or 20693863 counting only the distinct ones).

The product of its digits is 250880, while the sum is 41.

The square root of 82775444 is about 9098.1011205636. The cubic root of 82775444 is about 435.8133266467.

The spelling of 82775444 in words is "eighty-two million, seven hundred seventy-five thousand, four hundred forty-four".