1375939 has 4 divisors (see below), whose sum is σ = 1399320. Its totient is φ = 1352560.

The previous prime is 1375937. The next prime is 1375949. The reversal of 1375939 is 9395731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1375939 - 2¹ = 1375937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1375898 and 1375907.

It is not an unprimeable number, because it can be changed into a prime (1375937) 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 3 ways as a sum of consecutive naturals, for example, 11602 + ... + 11719.

It is an arithmetic number, because the mean of its divisors is an integer number (349830).

2^1375939 is an apocalyptic number.

1375939 is a deficient number, since it is larger than the sum of its proper divisors (23381).

1375939 is an equidigital number, since it uses as much as digits as its factorization.

1375939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23380.

The product of its digits is 25515, while the sum is 37.

The square root of 1375939 is about 1173.0042625669. The cubic root of 1375939 is about 111.2243117055.

The spelling of 1375939 in words is "one million, three hundred seventy-five thousand, nine hundred thirty-nine".