3286729 has 4 divisors (see below), whose sum is σ = 3480084. Its totient is φ = 3093376.

The previous prime is 3286721. The next prime is 3286739. The reversal of 3286729 is 9276823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9276823 = 839 ⋅11057.

It can be written as a sum of positive squares in 2 ways, for example, as 1557504 + 1729225 = 1248^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 3286729 - 2³ = 3286721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3286721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96652 + ... + 96685.

It is an arithmetic number, because the mean of its divisors is an integer number (870021).

Almost surely, 2^3286729 is an apocalyptic number.

It is an amenable number.

3286729 is a deficient number, since it is larger than the sum of its proper divisors (193355).

3286729 is a wasteful number, since it uses less digits than its factorization.

3286729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193354.

The product of its digits is 36288, while the sum is 37.

The square root of 3286729 is about 1812.9338101541. The cubic root of 3286729 is about 148.6807120283.

It can be divided in two parts, 32867 and 29, that added together give a triangular number (32896 = T₂₅₆).

The spelling of 3286729 in words is "three million, two hundred eighty-six thousand, seven hundred twenty-nine".