4393966 has 16 divisors (see below), whose sum is σ = 6998400. Its totient is φ = 2064568.

The previous prime is 4393957. The next prime is 4393967. The reversal of 4393966 is 6693934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4393967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1905 + ... + 3523.

It is an arithmetic number, because the mean of its divisors is an integer number (437400).

Almost surely, 2^4393966 is an apocalyptic number.

4393966 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

4393966 is a deficient number, since it is larger than the sum of its proper divisors (2604434).

4393966 is a wasteful number, since it uses less digits than its factorization.

4393966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703.

The product of its digits is 104976, while the sum is 40.

The square root of 4393966 is about 2096.1789045785. The cubic root of 4393966 is about 163.7893140265.

Subtracting 4393966 from its reverse (6693934), we obtain a cube (2299968 = 132³).

The spelling of 4393966 in words is "four million, three hundred ninety-three thousand, nine hundred sixty-six".