1973839 has 8 divisors (see below), whose sum is σ = 2317088. Its totient is φ = 1645920.

The previous prime is 1973831. The next prime is 1973857. The reversal of 1973839 is 9383791.

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

It is a cyclic number.

It is not a de Polignac number, because 1973839 - 2³ = 1973831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973831) 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 7 ways as a sum of consecutive naturals, for example, 3552 + ... + 4069.

It is an arithmetic number, because the mean of its divisors is an integer number (289636).

2^1973839 is an apocalyptic number.

1973839 is a deficient number, since it is larger than the sum of its proper divisors (343249).

1973839 is an equidigital number, since it uses as much as digits as its factorization.

1973839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7665.

The product of its digits is 40824, while the sum is 40.

The square root of 1973839 is about 1404.9338062699. The cubic root of 1973839 is about 125.4403456111.

The spelling of 1973839 in words is "one million, nine hundred seventy-three thousand, eight hundred thirty-nine".