19340839 has 12 divisors (see below), whose sum is σ = 22810944. Its totient is φ = 16347744.

The previous prime is 19340833. The next prime is 19340873. The reversal of 19340839 is 93804391.

It is not a de Polignac number, because 19340839 - 2⁹ = 19340327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19340798 and 19340807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19340833) 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 11 ways as a sum of consecutive naturals, for example, 874 + ... + 6280.

It is an arithmetic number, because the mean of its divisors is an integer number (1900912).

Almost surely, 2^19340839 is an apocalyptic number.

19340839 is a deficient number, since it is larger than the sum of its proper divisors (3470105).

19340839 is an equidigital number, since it uses as much as digits as its factorization.

19340839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5494 (or 5487 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 19340839 is about 4397.8220746183. The cubic root of 19340839 is about 268.4263235783.

The spelling of 19340839 in words is "nineteen million, three hundred forty thousand, eight hundred thirty-nine".