82939172 has 6 divisors (see below), whose sum is σ = 145143558. Its totient is φ = 41469584.

The previous prime is 82939151. The next prime is 82939183. The reversal of 82939172 is 27193928.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66161956 + 16777216 = 8134^2 + 4096^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10367393 + ... + 10367400.

It is an arithmetic number, because the mean of its divisors is an integer number (24190593).

Almost surely, 2^82939172 is an apocalyptic number.

It is an amenable number.

82939172 is a deficient number, since it is larger than the sum of its proper divisors (62204386).

82939172 is a wasteful number, since it uses less digits than its factorization.

82939172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20734797 (or 20734795 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 82939172 is about 9107.0945970710. The cubic root of 82939172 is about 436.1004804467.

The spelling of 82939172 in words is "eighty-two million, nine hundred thirty-nine thousand, one hundred seventy-two".