1386858 has 16 divisors (see below), whose sum is σ = 3026016. Its totient is φ = 420240.

The previous prime is 1386857. The next prime is 1386863. The reversal of 1386858 is 8586831.

It is a happy number.

It is a super-2 number, since 2×1386858² = 3846750224328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1386857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10441 + ... + 10572.

It is an arithmetic number, because the mean of its divisors is an integer number (189126).

2^1386858 is an apocalyptic number.

1386858 is an abundant number, since it is smaller than the sum of its proper divisors (1639158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1386858 is a wasteful number, since it uses less digits than its factorization.

1386858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21029.

The product of its digits is 46080, while the sum is 39.

The square root of 1386858 is about 1177.6493535854. The cubic root of 1386858 is about 111.5177500615.

It can be divided in two parts, 138 and 6858, that added together give a palindrome (6996).

The spelling of 1386858 in words is "one million, three hundred eighty-six thousand, eight hundred fifty-eight".