1071066939 has 4 divisors (see below), whose sum is σ = 1428089256. Its totient is φ = 714044624.

The previous prime is 1071066937. The next prime is 1071066989. The reversal of 1071066939 is 9396601701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9396601701 = 3 ⋅3132200567.

It is a cyclic number.

It is not a de Polignac number, because 1071066939 - 2¹ = 1071066937 is a prime.

It is a super-2 number, since 2×1071066939² = 2294368775637659442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1071066939.

It is not an unprimeable number, because it can be changed into a prime (1071066937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178511154 + ... + 178511159.

It is an arithmetic number, because the mean of its divisors is an integer number (357022314).

Almost surely, 2^1071066939 is an apocalyptic number.

1071066939 is a deficient number, since it is larger than the sum of its proper divisors (357022317).

1071066939 is an equidigital number, since it uses as much as digits as its factorization.

1071066939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357022316.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 1071066939 is about 32727.1590426056. The cubic root of 1071066939 is about 1023.1489698770.

The spelling of 1071066939 in words is "one billion, seventy-one million, sixty-six thousand, nine hundred thirty-nine".