1009493 has 4 divisors (see below), whose sum is σ = 1053408. Its totient is φ = 965580.

The previous prime is 1009487. The next prime is 1009499. The reversal of 1009493 is 3949001.

It is a happy number.

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 (1009487) and next prime (1009499).

It is a cyclic number.

It is not a de Polignac number, because 1009493 - 2⁸ = 1009237 is a prime.

It is a super-2 number, since 2×1009493² = 2038152234098, which contains 22 as substring.

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 (1009499) 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, 21923 + ... + 21968.

It is an arithmetic number, because the mean of its divisors is an integer number (263352).

2^1009493 is an apocalyptic number.

It is an amenable number.

1009493 is a deficient number, since it is larger than the sum of its proper divisors (43915).

1009493 is an equidigital number, since it uses as much as digits as its factorization.

1009493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43914.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1009493 is about 1004.7352885213. The cubic root of 1009493 is about 100.3154372803.

The spelling of 1009493 in words is "one million, nine thousand, four hundred ninety-three".