1939144 has 8 divisors (see below), whose sum is σ = 3635910. Its totient is φ = 969568.

The previous prime is 1939141. The next prime is 1939151. The reversal of 1939144 is 4419391.

It can be written as a sum of positive squares in only one way, i.e., 1855044 + 84100 = 1362^2 + 290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1939141) 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 as a sum of consecutive naturals, namely, 121189 + ... + 121204.

2^1939144 is an apocalyptic number.

It is an amenable number.

1939144 is a deficient number, since it is larger than the sum of its proper divisors (1696766).

1939144 is a wasteful number, since it uses less digits than its factorization.

1939144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242399 (or 242395 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 1939144 is about 1392.5315077225. The cubic root of 1939144 is about 124.7010241443.

The spelling of 1939144 in words is "one million, nine hundred thirty-nine thousand, one hundred forty-four".