1939105 has 16 divisors (see below), whose sum is σ = 2816640. Its totient is φ = 1251072.

The previous prime is 1939103. The next prime is 1939109. The reversal of 1939105 is 5019391.

It is a cyclic number.

It is not a de Polignac number, because 1939105 - 2¹ = 1939103 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1939103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1035 + ... + 2224.

It is an arithmetic number, because the mean of its divisors is an integer number (176040).

2^1939105 is an apocalyptic number.

It is an amenable number.

1939105 is a deficient number, since it is larger than the sum of its proper divisors (877535).

1939105 is a wasteful number, since it uses less digits than its factorization.

1939105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 1939105 is about 1392.5175043783. The cubic root of 1939105 is about 124.7001881444.

The spelling of 1939105 in words is "one million, nine hundred thirty-nine thousand, one hundred five".