4401623 has 4 divisors (see below), whose sum is σ = 4660560. Its totient is φ = 4142688.

The previous prime is 4401601. The next prime is 4401641. The reversal of 4401623 is 3261044.

It is a happy number.

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 4401623 - 2²⁰ = 3353047 is a prime.

It is a super-3 number, since 3×4401623³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4401595 and 4401604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4401653) 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, 129443 + ... + 129476.

It is an arithmetic number, because the mean of its divisors is an integer number (1165140).

Almost surely, 2^4401623 is an apocalyptic number.

4401623 is a deficient number, since it is larger than the sum of its proper divisors (258937).

4401623 is a wasteful number, since it uses less digits than its factorization.

4401623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258936.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4401623 is about 2098.0045281171. The cubic root of 4401623 is about 163.8843994982.

Adding to 4401623 its reverse (3261044), we get a palindrome (7662667).

The spelling of 4401623 in words is "four million, four hundred one thousand, six hundred twenty-three".