1070221393 has 4 divisors (see below), whose sum is σ = 1087766068. Its totient is φ = 1052676720.

The previous prime is 1070221357. The next prime is 1070221433. The reversal of 1070221393 is 3931220701.

1070221393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61968384 + 1008253009 = 7872^2 + 31753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1070221393 is a prime.

It is a super-2 number, since 2×1070221393² = 2290747660069720898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1070221333) 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, 8772246 + ... + 8772367.

It is an arithmetic number, because the mean of its divisors is an integer number (271941517).

Almost surely, 2^1070221393 is an apocalyptic number.

It is an amenable number.

1070221393 is a deficient number, since it is larger than the sum of its proper divisors (17544675).

1070221393 is an equidigital number, since it uses as much as digits as its factorization.

1070221393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17544674.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1070221393 is about 32714.2383833095. The cubic root of 1070221393 is about 1022.8796598270.

The spelling of 1070221393 in words is "one billion, seventy million, two hundred twenty-one thousand, three hundred ninety-three".