4491900 has 216 divisors, whose sum is σ = 17332224. Its totient is φ = 950400.

The previous prime is 4491899. The next prime is 4491913. The reversal of 4491900 is 91944.

It is a super-2 number, since 2×4491900² = 40354331220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 144885 + ... + 144915.

Almost surely, 2^4491900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4491900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8666112).

4491900 is an abundant number, since it is smaller than the sum of its proper divisors (12840324).

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

4491900 is a wasteful number, since it uses less digits than its factorization.

4491900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 4491900 is about 2119.4102953416. The cubic root of 4491900 is about 164.9972451331.

The spelling of 4491900 in words is "four million, four hundred ninety-one thousand, nine hundred".