4991338 has 16 divisors (see below), whose sum is σ = 8598240. Its totient is φ = 2149200.

The previous prime is 4991333. The next prime is 4991339. The reversal of 4991338 is 8331994.

It is a junction number, because it is equal to n+sod(n) for n = 4991297 and 4991306.

It is not an unprimeable number, because it can be changed into a prime (4991333) 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, 5553 + ... + 6388.

It is an arithmetic number, because the mean of its divisors is an integer number (537390).

Almost surely, 2^4991338 is an apocalyptic number.

4991338 is a deficient number, since it is larger than the sum of its proper divisors (3606902).

4991338 is a wasteful number, since it uses less digits than its factorization.

4991338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11973.

The product of its digits is 23328, while the sum is 37.

The square root of 4991338 is about 2234.1302558266. The cubic root of 4991338 is about 170.8987921795.

It can be divided in two parts, 4991 and 338, that added together give a square (5329 = 73²).

The spelling of 4991338 in words is "four million, nine hundred ninety-one thousand, three hundred thirty-eight".