1086397 has 8 divisors (see below), whose sum is σ = 1178744. Its totient is φ = 995328.

The previous prime is 1086391. The next prime is 1086413. The reversal of 1086397 is 7936801.

It can be written as a sum of positive squares in 4 ways, for example, as 27556 + 1058841 = 166^2 + 1029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 6-Lehmer number, since φ(1086397) divides (1086397-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 1086397 - 2³ = 1086389 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 (1086391) 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 7 ways as a sum of consecutive naturals, for example, 2293 + ... + 2725.

It is an arithmetic number, because the mean of its divisors is an integer number (147343).

2^1086397 is an apocalyptic number.

It is an amenable number.

1086397 is a deficient number, since it is larger than the sum of its proper divisors (92347).

1086397 is a wasteful number, since it uses less digits than its factorization.

1086397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1086397 is about 1042.3036985447. The cubic root of 1086397 is about 102.8007269804.

The spelling of 1086397 in words is "one million, eighty-six thousand, three hundred ninety-seven".