3451921 has 8 divisors (see below), whose sum is σ = 3801600. Its totient is φ = 3108240.

The previous prime is 3451897. The next prime is 3451933. The reversal of 3451921 is 1291543.

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 3451921 - 2⁷ = 3451793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3451961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241 + ... + 2638.

It is an arithmetic number, because the mean of its divisors is an integer number (475200).

Almost surely, 2^3451921 is an apocalyptic number.

It is an amenable number.

3451921 is a deficient number, since it is larger than the sum of its proper divisors (349679).

3451921 is a wasteful number, since it uses less digits than its factorization.

3451921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999.

The product of its digits is 1080, while the sum is 25.

The square root of 3451921 is about 1857.9346059536. The cubic root of 3451921 is about 151.1310208812.

The spelling of 3451921 in words is "three million, four hundred fifty-one thousand, nine hundred twenty-one".