3939449 has 4 divisors (see below), whose sum is σ = 4066560. Its totient is φ = 3812340.

The previous prime is 3939443. The next prime is 3939457. The reversal of 3939449 is 9449393.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3939449 - 2⁴ = 3939433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3939443) 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, 63509 + ... + 63570.

It is an arithmetic number, because the mean of its divisors is an integer number (1016640).

Almost surely, 2^3939449 is an apocalyptic number.

It is an amenable number.

3939449 is a deficient number, since it is larger than the sum of its proper divisors (127111).

3939449 is a wasteful number, since it uses less digits than its factorization.

3939449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127110.

The product of its digits is 104976, while the sum is 41.

The square root of 3939449 is about 1984.8045243802. The cubic root of 3939449 is about 157.9350397916.

The spelling of 3939449 in words is "three million, nine hundred thirty-nine thousand, four hundred forty-nine".