3440921 has 8 divisors (see below), whose sum is σ = 3791424. Its totient is φ = 3096720.

The previous prime is 3440897. The next prime is 3440929. The reversal of 3440921 is 1290443.

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

It is a de Polignac number, because none of the positive numbers 2^k-3440921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3440929) 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, 386 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (473928).

Almost surely, 2^3440921 is an apocalyptic number.

It is an amenable number.

3440921 is a deficient number, since it is larger than the sum of its proper divisors (350503).

3440921 is a wasteful number, since it uses less digits than its factorization.

3440921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151.

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

The square root of 3440921 is about 1854.9719674432. The cubic root of 3440921 is about 150.9703171045.

The spelling of 3440921 in words is "three million, four hundred forty thousand, nine hundred twenty-one".