3409421 has 4 divisors (see below), whose sum is σ = 3413532. Its totient is φ = 3405312.

The previous prime is 3409409. The next prime is 3409459. The reversal of 3409421 is 1249043.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1653796 + 1755625 = 1286^2 + 1325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3409421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3409481) 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, 326 + ... + 2631.

It is an arithmetic number, because the mean of its divisors is an integer number (853383).

Almost surely, 2^3409421 is an apocalyptic number.

It is an amenable number.

3409421 is a deficient number, since it is larger than the sum of its proper divisors (4111).

3409421 is a wasteful number, since it uses less digits than its factorization.

3409421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 3409421 is about 1846.4617515670. The cubic root of 3409421 is about 150.5082169000.

The spelling of 3409421 in words is "three million, four hundred nine thousand, four hundred twenty-one".