356789 has 4 divisors (see below), whose sum is σ = 362700. Its totient is φ = 350880.

The previous prime is 356761. The next prime is 356803. The reversal of 356789 is 987653.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 987653 = 29 ⋅34057.

It can be written as a sum of positive squares in 2 ways, for example, as 54289 + 302500 = 233^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 356789 - 2⁸ = 356533 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356749) 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 3 ways as a sum of consecutive naturals, for example, 2864 + ... + 2985.

It is an arithmetic number, because the mean of its divisors is an integer number (90675).

2³⁵⁶⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

356789 is a deficient number, since it is larger than the sum of its proper divisors (5911).

356789 is an equidigital number, since it uses as much as digits as its factorization.

356789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910.

The product of its digits is 45360, while the sum is 38.

The square root of 356789 is about 597.3181731707. The cubic root of 356789 is about 70.9257307093.

The spelling of 356789 in words is "three hundred fifty-six thousand, seven hundred eighty-nine".