4638455 has 8 divisors (see below), whose sum is σ = 5633712. Its totient is φ = 3665728.

The previous prime is 4638449. The next prime is 4638457. The reversal of 4638455 is 5548364.

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 4638455 - 2⁸ = 4638199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638457) 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, 5174 + ... + 6003.

It is an arithmetic number, because the mean of its divisors is an integer number (704214).

Almost surely, 2^4638455 is an apocalyptic number.

4638455 is a deficient number, since it is larger than the sum of its proper divisors (995257).

4638455 is a wasteful number, since it uses less digits than its factorization.

4638455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11265.

The product of its digits is 57600, while the sum is 35.

The square root of 4638455 is about 2153.7072688738. The cubic root of 4638455 is about 166.7725038878.

Subtracting 4638455 from its reverse (5548364), we obtain a palindrome (909909).

The spelling of 4638455 in words is "four million, six hundred thirty-eight thousand, four hundred fifty-five".