4491837 has 48 divisors (see below), whose sum is σ = 7967232. Its totient is φ = 2384640.

The previous prime is 4491833. The next prime is 4491841. The reversal of 4491837 is 7381944.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4491833) and next prime (4491841).

It is not a de Polignac number, because 4491837 - 2² = 4491833 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

4491837 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491833) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95548 + ... + 95594.

It is an arithmetic number, because the mean of its divisors is an integer number (165984).

Almost surely, 2^4491837 is an apocalyptic number.

4491837 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

4491837 is a deficient number, since it is larger than the sum of its proper divisors (3475395).

4491837 is a wasteful number, since it uses less digits than its factorization.

4491837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 135 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 4491837 is about 2119.3954326647. The cubic root of 4491837 is about 164.9964737538.

The spelling of 4491837 in words is "four million, four hundred ninety-one thousand, eight hundred thirty-seven".