1990793 has 8 divisors (see below), whose sum is σ = 2288640. Its totient is φ = 1696320.

The previous prime is 1990787. The next prime is 1990823. The reversal of 1990793 is 3970991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1990793 - 2¹⁰ = 1989769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1990753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593 + ... + 2081.

It is an arithmetic number, because the mean of its divisors is an integer number (286080).

2^1990793 is an apocalyptic number.

It is an amenable number.

1990793 is a deficient number, since it is larger than the sum of its proper divisors (297847).

1990793 is a wasteful number, since it uses less digits than its factorization.

1990793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 1990793 is about 1410.9546413687. The cubic root of 1990793 is about 125.7984726709.

The spelling of 1990793 in words is "one million, nine hundred ninety thousand, seven hundred ninety-three".