1022393 has 4 divisors (see below), whose sum is σ = 1025508. Its totient is φ = 1019280.

The previous prime is 1022389. The next prime is 1022429. The reversal of 1022393 is 3932201.

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 426409 + 595984 = 653^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022393 - 2² = 1022389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998 + ... + 1743.

It is an arithmetic number, because the mean of its divisors is an integer number (256377).

2^1022393 is an apocalyptic number.

It is an amenable number.

1022393 is a deficient number, since it is larger than the sum of its proper divisors (3115).

1022393 is an equidigital number, since it uses as much as digits as its factorization.

1022393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3114.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1022393 is about 1011.1345113287. The cubic root of 1022393 is about 100.7409300022.

Adding to 1022393 its reverse (3932201), we get a palindrome (4954594).

The spelling of 1022393 in words is "one million, twenty-two thousand, three hundred ninety-three".