3923947 has 4 divisors (see below), whose sum is σ = 3988336. Its totient is φ = 3859560.

The previous prime is 3923917. The next prime is 3923963. The reversal of 3923947 is 7493293.

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

It is a cyclic number.

It is not a de Polignac number, because 3923947 - 2¹⁹ = 3399659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3923917) 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, 32103 + ... + 32224.

It is an arithmetic number, because the mean of its divisors is an integer number (997084).

Almost surely, 2^3923947 is an apocalyptic number.

3923947 is a deficient number, since it is larger than the sum of its proper divisors (64389).

3923947 is an equidigital number, since it uses as much as digits as its factorization.

3923947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64388.

The product of its digits is 40824, while the sum is 37.

The square root of 3923947 is about 1980.8955045635. The cubic root of 3923947 is about 157.7276057531.

The spelling of 3923947 in words is "three million, nine hundred twenty-three thousand, nine hundred forty-seven".