1916439 has 12 divisors (see below), whose sum is σ = 2972664. Its totient is φ = 1095024.

The previous prime is 1916423. The next prime is 1916443. The reversal of 1916439 is 9346191.

It is not a de Polignac number, because 1916439 - 2⁴ = 1916423 is a prime.

1916439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916419) 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, 6372 + ... + 6665.

It is an arithmetic number, because the mean of its divisors is an integer number (247722).

2^1916439 is an apocalyptic number.

1916439 is a deficient number, since it is larger than the sum of its proper divisors (1056225).

1916439 is a wasteful number, since it uses less digits than its factorization.

1916439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13054 (or 13047 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 1916439 is about 1384.3550845069. The cubic root of 1916439 is about 124.2124134144.

The spelling of 1916439 in words is "one million, nine hundred sixteen thousand, four hundred thirty-nine".