1940899 has 4 divisors (see below), whose sum is σ = 1988280. Its totient is φ = 1893520.

The previous prime is 1940893. The next prime is 1940903. The reversal of 1940899 is 9980491.

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

It is a cyclic number.

It is not a de Polignac number, because 1940899 - 2¹¹ = 1938851 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1940893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23629 + ... + 23710.

It is an arithmetic number, because the mean of its divisors is an integer number (497070).

2^1940899 is an apocalyptic number.

1940899 is a deficient number, since it is larger than the sum of its proper divisors (47381).

1940899 is an equidigital number, since it uses as much as digits as its factorization.

1940899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47380.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1940899 is about 1393.1615125318. The cubic root of 1940899 is about 124.7386325440.

It can be divided in two parts, 1 and 940899, that added together give a square (940900 = 970²).

The spelling of 1940899 in words is "one million, nine hundred forty thousand, eight hundred ninety-nine".