3403421 has 4 divisors (see below), whose sum is σ = 3889632. Its totient is φ = 2917212.

The previous prime is 3403409. The next prime is 3403423. The reversal of 3403421 is 1243043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1243043 = 307 ⋅4049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3403421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3403421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3403423) 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, 243095 + ... + 243108.

It is an arithmetic number, because the mean of its divisors is an integer number (972408).

Almost surely, 2^3403421 is an apocalyptic number.

It is an amenable number.

3403421 is a deficient number, since it is larger than the sum of its proper divisors (486211).

3403421 is an equidigital number, since it uses as much as digits as its factorization.

3403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486210.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 3403421 is about 1844.8363071015. The cubic root of 3403421 is about 150.4198754526.

Adding to 3403421 its reverse (1243043), we get a palindrome (4646464).

The spelling of 3403421 in words is "three million, four hundred three thousand, four hundred twenty-one".