1286379 has 12 divisors (see below), whose sum is σ = 1908816. Its totient is φ = 834192.

The previous prime is 1286371. The next prime is 1286381. The reversal of 1286379 is 9736821.

1286379 is a `hidden beast` number, since 1 + 286 + 379 = 666.

It is not a de Polignac number, because 1286379 - 2³ = 1286371 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1286371) 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, 1599 + ... + 2264.

It is an arithmetic number, because the mean of its divisors is an integer number (159068).

2^1286379 is an apocalyptic number.

1286379 is a deficient number, since it is larger than the sum of its proper divisors (622437).

1286379 is a wasteful number, since it uses less digits than its factorization.

1286379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906 (or 3903 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1286379 is about 1134.1864926016. The cubic root of 1286379 is about 108.7567732603.

The spelling of 1286379 in words is "one million, two hundred eighty-six thousand, three hundred seventy-nine".