3400321 has 4 divisors (see below), whose sum is σ = 3464532. Its totient is φ = 3336112.

The previous prime is 3400303. The next prime is 3400333. The reversal of 3400321 is 1230043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1230043 = 977 ⋅1259.

It can be written as a sum of positive squares in 2 ways, for example, as 2852721 + 547600 = 1689^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 3400321 - 2⁷ = 3400193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3400301) 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, 32026 + ... + 32131.

It is an arithmetic number, because the mean of its divisors is an integer number (866133).

Almost surely, 2^3400321 is an apocalyptic number.

It is an amenable number.

3400321 is a deficient number, since it is larger than the sum of its proper divisors (64211).

3400321 is an equidigital number, since it uses as much as digits as its factorization.

3400321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64210.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 3400321 is about 1843.9959327504. The cubic root of 3400321 is about 150.3741916869.

Adding to 3400321 its reverse (1230043), we get a palindrome (4630364).

It can be divided in two parts, 3400 and 321, that added together give a square (3721 = 61²).

The spelling of 3400321 in words is "three million, four hundred thousand, three hundred twenty-one".