3928449 has 8 divisors (see below), whose sum is σ = 5986240. Its totient is φ = 2244816.

The previous prime is 3928447. The next prime is 3928451. The reversal of 3928449 is 9448293.

It is an interprime number because it is at equal distance from previous prime (3928447) and next prime (3928451).

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

It is not a de Polignac number, because 3928449 - 2¹ = 3928447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928447) 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, 93514 + ... + 93555.

It is an arithmetic number, because the mean of its divisors is an integer number (748280).

Almost surely, 2^3928449 is an apocalyptic number.

It is an amenable number.

3928449 is a deficient number, since it is larger than the sum of its proper divisors (2057791).

3928449 is a wasteful number, since it uses less digits than its factorization.

3928449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187079.

The product of its digits is 62208, while the sum is 39.

The square root of 3928449 is about 1982.0315335534. The cubic root of 3928449 is about 157.7879037378.

The spelling of 3928449 in words is "three million, nine hundred twenty-eight thousand, four hundred forty-nine".