4638949 has 8 divisors (see below), whose sum is σ = 5445248. Its totient is φ = 3868560.

The previous prime is 4638937. The next prime is 4638961. The reversal of 4638949 is 9498364.

It is an interprime number because it is at equal distance from previous prime (4638937) and next prime (4638961).

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 4638949 - 2¹³ = 4630757 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 (4638979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8697 + ... + 9214.

It is an arithmetic number, because the mean of its divisors is an integer number (680656).

Almost surely, 2^4638949 is an apocalyptic number.

It is an amenable number.

4638949 is a deficient number, since it is larger than the sum of its proper divisors (806299).

4638949 is a wasteful number, since it uses less digits than its factorization.

4638949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17955.

The product of its digits is 186624, while the sum is 43.

The square root of 4638949 is about 2153.8219517871. The cubic root of 4638949 is about 166.7784241559.

The spelling of 4638949 in words is "four million, six hundred thirty-eight thousand, nine hundred forty-nine".