1385879 has 12 divisors (see below), whose sum is σ = 1600200. Its totient is φ = 1190160.

The previous prime is 1385873. The next prime is 1385887. The reversal of 1385879 is 9785831.

It is a happy number.

It is not a de Polignac number, because 1385879 - 2⁴ = 1385863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385873) 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 11 ways as a sum of consecutive naturals, for example, 3797 + ... + 4145.

It is an arithmetic number, because the mean of its divisors is an integer number (133350).

2^1385879 is an apocalyptic number.

1385879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1385879 is a deficient number, since it is larger than the sum of its proper divisors (214321).

1385879 is a wasteful number, since it uses less digits than its factorization.

1385879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 379 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 1385879 is about 1177.2336216741. The cubic root of 1385879 is about 111.4915033040.

The spelling of 1385879 in words is "one million, three hundred eighty-five thousand, eight hundred seventy-nine".