4991238 has 36 divisors (see below), whose sum is σ = 12582180. Its totient is φ = 1425816.

The previous prime is 4991237. The next prime is 4991249. The reversal of 4991238 is 8321994.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991237) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1948 + ... + 3711.

It is an arithmetic number, because the mean of its divisors is an integer number (349505).

Almost surely, 2^4991238 is an apocalyptic number.

4991238 is an abundant number, since it is smaller than the sum of its proper divisors (7590942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4991238 is a wasteful number, since it uses less digits than its factorization.

4991238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5681 (or 5671 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 4991238 is about 2234.1078756407. The cubic root of 4991238 is about 170.8976508694.

The spelling of 4991238 in words is "four million, nine hundred ninety-one thousand, two hundred thirty-eight".