4891000 has 64 divisors (see below), whose sum is σ = 11774880. Its totient is φ = 1900800.

The previous prime is 4890983. The next prime is 4891001. The reversal of 4891000 is 1984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66964 + ... + 67036.

Almost surely, 2^4891000 is an apocalyptic number.

4891000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4891000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5887440).

4891000 is an abundant number, since it is smaller than the sum of its proper divisors (6883880).

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

4891000 is a wasteful number, since it uses less digits than its factorization.

4891000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 4891000 is about 2211.5605350069. The cubic root of 4891000 is about 169.7458717418.

Adding to 4891000 its reverse (1984), we get a palindrome (4892984).

The spelling of 4891000 in words is "four million, eight hundred ninety-one thousand".