1375849 has 4 divisors (see below), whose sum is σ = 1378260. Its totient is φ = 1373440.

The previous prime is 1375823. The next prime is 1375853. The reversal of 1375849 is 9485731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 235225 + 1140624 = 485^2 + 1068^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375849 - 2⁵ = 1375817 is a prime.

It is a Duffinian number.

1375849 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1375819) 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, 189 + ... + 1669.

It is an arithmetic number, because the mean of its divisors is an integer number (344565).

2^1375849 is an apocalyptic number.

It is an amenable number.

1375849 is a deficient number, since it is larger than the sum of its proper divisors (2411).

1375849 is an equidigital number, since it uses as much as digits as its factorization.

1375849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410.

The product of its digits is 30240, while the sum is 37.

The square root of 1375849 is about 1172.9658989076. The cubic root of 1375849 is about 111.2218865965.

The spelling of 1375849 in words is "one million, three hundred seventy-five thousand, eight hundred forty-nine".