3930947 has 4 divisors (see below), whose sum is σ = 3939936. Its totient is φ = 3921960.

The previous prime is 3930923. The next prime is 3930973. The reversal of 3930947 is 7490393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7490393 = 317 ⋅23629.

It is a cyclic number.

It is not a de Polignac number, because 3930947 - 2¹⁰ = 3929923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3932947) 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, 3803 + ... + 4724.

It is an arithmetic number, because the mean of its divisors is an integer number (984984).

Almost surely, 2^3930947 is an apocalyptic number.

3930947 is a deficient number, since it is larger than the sum of its proper divisors (8989).

3930947 is an equidigital number, since it uses as much as digits as its factorization.

3930947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8988.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 3930947 is about 1982.6615949274. The cubic root of 3930947 is about 157.8213410790.

The spelling of 3930947 in words is "three million, nine hundred thirty thousand, nine hundred forty-seven".