1940999 has 4 divisors (see below), whose sum is σ = 2007960. Its totient is φ = 1874040.

The previous prime is 1940987. The next prime is 1941013. The reversal of 1940999 is 9990491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1940999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940929) 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, 33437 + ... + 33494.

It is an arithmetic number, because the mean of its divisors is an integer number (501990).

2^1940999 is an apocalyptic number.

1940999 is a deficient number, since it is larger than the sum of its proper divisors (66961).

1940999 is an equidigital number, since it uses as much as digits as its factorization.

1940999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66960.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 1940999 is about 1393.1974016628. The cubic root of 1940999 is about 124.7407747899.

The spelling of 1940999 in words is "one million, nine hundred forty thousand, nine hundred ninety-nine".