3949309 has 8 divisors (see below), whose sum is σ = 4860800. Its totient is φ = 3124656.

The previous prime is 3949301. The next prime is 3949313. The reversal of 3949309 is 9039493.

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 3949309 - 2³ = 3949301 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21609 + ... + 21790.

It is an arithmetic number, because the mean of its divisors is an integer number (607600).

Almost surely, 2^3949309 is an apocalyptic number.

It is an amenable number.

3949309 is a deficient number, since it is larger than the sum of its proper divisors (911491).

3949309 is a wasteful number, since it uses less digits than its factorization.

3949309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43419.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 3949309 is about 1987.2868439156. The cubic root of 3949309 is about 158.0666945905.

The spelling of 3949309 in words is "three million, nine hundred forty-nine thousand, three hundred nine".