4393963 has 4 divisors (see below), whose sum is σ = 5021680. Its totient is φ = 3766248.

The previous prime is 4393957. The next prime is 4393967. The reversal of 4393963 is 3693934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3693934 = 2 ⋅1846967.

It is a cyclic number.

It is not a de Polignac number, because 4393963 - 2⁹ = 4393451 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 313848 + ... + 313861.

It is an arithmetic number, because the mean of its divisors is an integer number (1255420).

Almost surely, 2^4393963 is an apocalyptic number.

4393963 is a deficient number, since it is larger than the sum of its proper divisors (627717).

4393963 is an equidigital number, since it uses as much as digits as its factorization.

4393963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627716.

The product of its digits is 52488, while the sum is 37.

The square root of 4393963 is about 2096.1781889906. The cubic root of 4393963 is about 163.7892767505.

It can be divided in two parts, 4393 and 963, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 4393963 in words is "four million, three hundred ninety-three thousand, nine hundred sixty-three".