1039993 has 4 divisors (see below), whose sum is σ = 1057680. Its totient is φ = 1022308.

The previous prime is 1039979. The next prime is 1039999. The reversal of 1039993 is 3999301.

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 a cyclic number.

It is not a de Polignac number, because 1039993 - 2⁹ = 1039481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1039999) 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, 8755 + ... + 8872.

It is an arithmetic number, because the mean of its divisors is an integer number (264420).

2^1039993 is an apocalyptic number.

It is an amenable number.

1039993 is a deficient number, since it is larger than the sum of its proper divisors (17687).

1039993 is an equidigital number, since it uses as much as digits as its factorization.

1039993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17686.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 1039993 is about 1019.8004706804. The cubic root of 1039993 is about 101.3157130701.

The spelling of 1039993 in words is "one million, thirty-nine thousand, nine hundred ninety-three".