3946309 has 4 divisors (see below), whose sum is σ = 4053004. Its totient is φ = 3839616.

The previous prime is 3946297. The next prime is 3946337. The reversal of 3946309 is 9036493.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3621409 + 324900 = 1903^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 3946309 - 2¹³ = 3938117 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 (3946339) 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, 53292 + ... + 53365.

It is an arithmetic number, because the mean of its divisors is an integer number (1013251).

Almost surely, 2^3946309 is an apocalyptic number.

It is an amenable number.

3946309 is a deficient number, since it is larger than the sum of its proper divisors (106695).

3946309 is a wasteful number, since it uses less digits than its factorization.

3946309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106694.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 3946309 is about 1986.5319025880. The cubic root of 3946309 is about 158.0266605655.

The spelling of 3946309 in words is "three million, nine hundred forty-six thousand, three hundred nine".