1023493 has 4 divisors (see below), whose sum is σ = 1031680. Its totient is φ = 1015308.

The previous prime is 1023487. The next prime is 1023499. The reversal of 1023493 is 3943201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1023487) and next prime (1023499).

It is a cyclic number.

It is not a de Polignac number, because 1023493 - 2⁵ = 1023461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3903 + ... + 4156.

It is an arithmetic number, because the mean of its divisors is an integer number (257920).

2^1023493 is an apocalyptic number.

It is an amenable number.

1023493 is a deficient number, since it is larger than the sum of its proper divisors (8187).

1023493 is an equidigital number, since it uses as much as digits as its factorization.

1023493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8186.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1023493 is about 1011.6783085547. The cubic root of 1023493 is about 100.7770463503. Note that the first 3 decimals are identical.

Adding to 1023493 its reverse (3943201), we get a palindrome (4966694).

The spelling of 1023493 in words is "one million, twenty-three thousand, four hundred ninety-three".