1990933 has 8 divisors (see below), whose sum is σ = 2337152. Its totient is φ = 1660176.

The previous prime is 1990927. The next prime is 1990939. The reversal of 1990933 is 3390991.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1990927) and next prime (1990939).

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

It is not a de Polignac number, because 1990933 - 2¹³ = 1982741 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 (1990939) 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, 3585 + ... + 4102.

It is an arithmetic number, because the mean of its divisors is an integer number (292144).

2^1990933 is an apocalyptic number.

It is an amenable number.

1990933 is a deficient number, since it is larger than the sum of its proper divisors (346219).

1990933 is an equidigital number, since it uses as much as digits as its factorization.

1990933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7731.

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

The square root of 1990933 is about 1411.0042522969. The cubic root of 1990933 is about 125.8014214746.

The spelling of 1990933 in words is "one million, nine hundred ninety thousand, nine hundred thirty-three".