947773853 has 16 divisors (see below), whose sum is σ = 1057948080. Its totient is φ = 843042816.

The previous prime is 947773843. The next prime is 947773913. The reversal of 947773853 is 358377749.

It can be written as a sum of positive squares in 8 ways, for example, as 255136729 + 692637124 = 15973^2 + 26318^2 .

It is a cyclic number.

It is not a de Polignac number, because 947773853 - 2⁴ = 947773837 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 947773795 and 947773804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947773843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215351 + ... + 219707.

It is an arithmetic number, because the mean of its divisors is an integer number (66121755).

Almost surely, 2^947773853 is an apocalyptic number.

It is an amenable number.

947773853 is a deficient number, since it is larger than the sum of its proper divisors (110174227).

947773853 is a wasteful number, since it uses less digits than its factorization.

947773853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976.

The product of its digits is 4445280, while the sum is 53.

The square root of 947773853 is about 30785.9359610846. The cubic root of 947773853 is about 982.2791093308.

The spelling of 947773853 in words is "nine hundred forty-seven million, seven hundred seventy-three thousand, eight hundred fifty-three".