4644538 has 4 divisors (see below), whose sum is σ = 6966810. Its totient is φ = 2322268.

The previous prime is 4644533. The next prime is 4644581. The reversal of 4644538 is 8354464.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4524129 + 120409 = 2127^2 + 347^2 .

It is not an unprimeable number, because it can be changed into a prime (4644533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1161133 + ... + 1161136.

Almost surely, 2^4644538 is an apocalyptic number.

4644538 is a deficient number, since it is larger than the sum of its proper divisors (2322272).

4644538 is a wasteful number, since it uses less digits than its factorization.

4644538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322271.

The product of its digits is 46080, while the sum is 34.

The square root of 4644538 is about 2155.1190222352. The cubic root of 4644538 is about 166.8453754217.

The spelling of 4644538 in words is "four million, six hundred forty-four thousand, five hundred thirty-eight".