1940839 has 4 divisors (see below), whose sum is σ = 2055024. Its totient is φ = 1826656.

The previous prime is 1940833. The next prime is 1940849. The reversal of 1940839 is 9380491.

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 1940839 - 2⁷ = 1940711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940833) 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, 57067 + ... + 57100.

It is an arithmetic number, because the mean of its divisors is an integer number (513756).

2^1940839 is an apocalyptic number.

1940839 is a deficient number, since it is larger than the sum of its proper divisors (114185).

1940839 is a wasteful number, since it uses less digits than its factorization.

1940839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114184.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1940839 is about 1393.1399786095. The cubic root of 1940839 is about 124.7373471611.

The spelling of 1940839 in words is "one million, nine hundred forty thousand, eight hundred thirty-nine".