3401921 has 8 divisors (see below), whose sum is σ = 3646944. Its totient is φ = 3161920.

The previous prime is 3401917. The next prime is 3401927. The reversal of 3401921 is 1291043.

3401921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3401921 - 2² = 3401917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3401893 and 3401902.

It is not an unprimeable number, because it can be changed into a prime (3401927) 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 7 ways as a sum of consecutive naturals, for example, 206 + ... + 2616.

It is an arithmetic number, because the mean of its divisors is an integer number (455868).

Almost surely, 2^3401921 is an apocalyptic number.

It is an amenable number.

3401921 is a deficient number, since it is larger than the sum of its proper divisors (245023).

3401921 is a wasteful number, since it uses less digits than its factorization.

3401921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 3401921 is about 1844.4297221635. The cubic root of 3401921 is about 150.3977738702.

Adding to 3401921 its reverse (1291043), we get a palindrome (4692964).

The spelling of 3401921 in words is "three million, four hundred one thousand, nine hundred twenty-one".