1376385 has 16 divisors (see below), whose sum is σ = 2229120. Its totient is φ = 725120.

The previous prime is 1376383. The next prime is 1376393. The reversal of 1376385 is 5836731.

It is a happy number.

It is not a de Polignac number, because 1376385 - 2¹ = 1376383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1376383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (139320).

2^1376385 is an apocalyptic number.

1376385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1376385 is a deficient number, since it is larger than the sum of its proper divisors (852735).

1376385 is a wasteful number, since it uses less digits than its factorization.

1376385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its digits is 15120, while the sum is 33.

The square root of 1376385 is about 1173.1943572998. The cubic root of 1376385 is about 111.2363279078.

The spelling of 1376385 in words is "one million, three hundred seventy-six thousand, three hundred eighty-five".