4491338 has 8 divisors (see below), whose sum is σ = 6747300. Its totient is φ = 2242240.

The previous prime is 4491337. The next prime is 4491341. The reversal of 4491338 is 8331944.

It can be written as a sum of positive squares in 2 ways, for example, as 4464769 + 26569 = 2113^2 + 163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4491337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488 + ... + 3036.

Almost surely, 2^4491338 is an apocalyptic number.

4491338 is a deficient number, since it is larger than the sum of its proper divisors (2255962).

4491338 is a wasteful number, since it uses less digits than its factorization.

4491338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432.

The product of its digits is 10368, while the sum is 32.

The square root of 4491338 is about 2119.2777071446. The cubic root of 4491338 is about 164.9903636858.

Subtracting 4491338 from its reverse (8331944), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 4491338 in words is "four million, four hundred ninety-one thousand, three hundred thirty-eight".