1066938847 has 4 divisors (see below), whose sum is σ = 1149011080. Its totient is φ = 984866616.

The previous prime is 1066938827. The next prime is 1066938877. The reversal of 1066938847 is 7488396601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7488396601 = 7 ⋅1069770943.

It is a cyclic number.

It is not a de Polignac number, because 1066938847 - 2¹⁵ = 1066906079 is a prime.

It is a super-2 number, since 2×1066938847² = 2276717006475378818, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1066938794 and 1066938803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066938827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41036097 + ... + 41036122.

It is an arithmetic number, because the mean of its divisors is an integer number (287252770).

Almost surely, 2^1066938847 is an apocalyptic number.

1066938847 is a deficient number, since it is larger than the sum of its proper divisors (82072233).

1066938847 is an equidigital number, since it uses as much as digits as its factorization.

1066938847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82072232.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 1066938847 is about 32664.0298646692. The cubic root of 1066938847 is about 1021.8328084492.

The spelling of 1066938847 in words is "one billion, sixty-six million, nine hundred thirty-eight thousand, eight hundred forty-seven".