853138772 has 6 divisors (see below), whose sum is σ = 1492992858. Its totient is φ = 426569384.

The previous prime is 853138763. The next prime is 853138777. The reversal of 853138772 is 277831358.

It can be written as a sum of positive squares in only one way, i.e., 466387216 + 386751556 = 21596^2 + 19666^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853138777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106642343 + ... + 106642350.

It is an arithmetic number, because the mean of its divisors is an integer number (248832143).

Almost surely, 2^853138772 is an apocalyptic number.

It is an amenable number.

853138772 is a deficient number, since it is larger than the sum of its proper divisors (639854086).

853138772 is a wasteful number, since it uses less digits than its factorization.

853138772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213284697 (or 213284695 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The square root of 853138772 is about 29208.5393677945. The cubic root of 853138772 is about 948.4327888530.

The spelling of 853138772 in words is "eight hundred fifty-three million, one hundred thirty-eight thousand, seven hundred seventy-two".