1999011 has 8 divisors (see below), whose sum is σ = 3046144. Its totient is φ = 1142280.

The previous prime is 1999007. The next prime is 1999021. The reversal of 1999011 is 1109991.

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

It is not a de Polignac number, because 1999011 - 2² = 1999007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1999011.

It is not an unprimeable number, because it can be changed into a prime (1999021) 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, 47575 + ... + 47616.

It is an arithmetic number, because the mean of its divisors is an integer number (380768).

2^1999011 is an apocalyptic number.

1999011 is a deficient number, since it is larger than the sum of its proper divisors (1047133).

1999011 is an equidigital number, since it uses as much as digits as its factorization.

1999011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95201.

The product of its (nonzero) digits is 729, while the sum is 30.

The square root of 1999011 is about 1413.8638548319. The cubic root of 1999011 is about 125.9713338667.

The spelling of 1999011 in words is "one million, nine hundred ninety-nine thousand, eleven".