4638442 has 4 divisors (see below), whose sum is σ = 6957666. Its totient is φ = 2319220.

The previous prime is 4638419. The next prime is 4638449. The reversal of 4638442 is 2448364.

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., 2893401 + 1745041 = 1701^2 + 1321^2 .

It is not an unprimeable number, because it can be changed into a prime (4638449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1159609 + ... + 1159612.

Almost surely, 2^4638442 is an apocalyptic number.

4638442 is a deficient number, since it is larger than the sum of its proper divisors (2319224).

4638442 is a wasteful number, since it uses less digits than its factorization.

4638442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319223.

The product of its digits is 18432, while the sum is 31.

The square root of 4638442 is about 2153.7042508200. The cubic root of 4638442 is about 166.7723480856.

The spelling of 4638442 in words is "four million, six hundred thirty-eight thousand, four hundred forty-two".