4391963 has 8 divisors (see below), whose sum is σ = 4568400. Its totient is φ = 4217248.

The previous prime is 4391957. The next prime is 4391969. The reversal of 4391963 is 3691934.

It is an interprime number because it is at equal distance from previous prime (4391957) and next prime (4391969).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4391963 - 2⁸ = 4391707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4391969) 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, 7520 + ... + 8082.

It is an arithmetic number, because the mean of its divisors is an integer number (571050).

Almost surely, 2^4391963 is an apocalyptic number.

4391963 is a deficient number, since it is larger than the sum of its proper divisors (176437).

4391963 is a wasteful number, since it uses less digits than its factorization.

4391963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its digits is 17496, while the sum is 35.

The square root of 4391963 is about 2095.7010760125. The cubic root of 4391963 is about 163.7644223259.

The spelling of 4391963 in words is "four million, three hundred ninety-one thousand, nine hundred sixty-three".