4394623 has 4 divisors (see below), whose sum is σ = 4466728. Its totient is φ = 4322520.

The previous prime is 4394617. The next prime is 4394627. The reversal of 4394623 is 3264934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3264934 = 2 ⋅1632467.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4394623 is a prime.

It is a super-2 number, since 2×4394623² = 38625422624258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4⁷ + 3⁸ + 9 + 4¹¹ + 6³ + 2 + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4394627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35961 + ... + 36082.

It is an arithmetic number, because the mean of its divisors is an integer number (1116682).

Almost surely, 2^4394623 is an apocalyptic number.

4394623 is a deficient number, since it is larger than the sum of its proper divisors (72105).

4394623 is an equidigital number, since it uses as much as digits as its factorization.

4394623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72104.

The product of its digits is 15552, while the sum is 31.

The square root of 4394623 is about 2096.3356124438. The cubic root of 4394623 is about 163.7974770556.

The spelling of 4394623 in words is "four million, three hundred ninety-four thousand, six hundred twenty-three".