2009993 has 8 divisors (see below), whose sum is σ = 2111616. Its totient is φ = 1909600.

The previous prime is 2009989. The next prime is 2009999. The reversal of 2009993 is 3999002.

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 2009993 - 2² = 2009989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2009999) 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, 6308 + ... + 6618.

It is an arithmetic number, because the mean of its divisors is an integer number (263952).

2^2009993 is an apocalyptic number.

2009993 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2009993 is a deficient number, since it is larger than the sum of its proper divisors (101623).

2009993 is a wasteful number, since it uses less digits than its factorization.

2009993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 2009993 is about 1417.7422191640. The cubic root of 2009993 is about 126.2015963190.

The spelling of 2009993 in words is "two million, nine thousand, nine hundred ninety-three".