4491870 has 16 divisors (see below), whose sum is σ = 10780560. Its totient is φ = 1197824.

The previous prime is 4491841. The next prime is 4491871. The reversal of 4491870 is 781944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491871) 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, 74835 + ... + 74894.

It is an arithmetic number, because the mean of its divisors is an integer number (673785).

Almost surely, 2^4491870 is an apocalyptic number.

4491870 is an abundant number, since it is smaller than the sum of its proper divisors (6288690).

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

4491870 is a wasteful number, since it uses less digits than its factorization.

4491870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149739.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 4491870 is about 2119.4032178894. The cubic root of 4491870 is about 164.9968778105.

The spelling of 4491870 in words is "four million, four hundred ninety-one thousand, eight hundred seventy".