1940089 has 4 divisors (see below), whose sum is σ = 1947520. Its totient is φ = 1932660.

The previous prime is 1940087. The next prime is 1940123. The reversal of 1940089 is 9800491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1940089 - 2¹ = 1940087 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 1940089.

It is not an unprimeable number, because it can be changed into a prime (1940083) 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, 3309 + ... + 3850.

It is an arithmetic number, because the mean of its divisors is an integer number (486880).

2^1940089 is an apocalyptic number.

It is an amenable number.

1940089 is a deficient number, since it is larger than the sum of its proper divisors (7431).

1940089 is an equidigital number, since it uses as much as digits as its factorization.

1940089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7430.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1940089 is about 1392.8707764901. The cubic root of 1940089 is about 124.7212776394.

The spelling of 1940089 in words is "one million, nine hundred forty thousand, eighty-nine".