4394890 has 16 divisors (see below), whose sum is σ = 8327520. Its totient is φ = 1665360.

The previous prime is 4394881. The next prime is 4394893. The reversal of 4394890 is 984934.

It is a super-2 number, since 2×4394890² = 38630116224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4394893) 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, 11376 + ... + 11755.

It is an arithmetic number, because the mean of its divisors is an integer number (520470).

Almost surely, 2^4394890 is an apocalyptic number.

4394890 is a deficient number, since it is larger than the sum of its proper divisors (3932630).

4394890 is a wasteful number, since it uses less digits than its factorization.

4394890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23157.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 4394890 is about 2096.3992940277. The cubic root of 4394890 is about 163.8007942184.

It can be divided in two parts, 439 and 4890, that added together give a square (5329 = 73²).

The spelling of 4394890 in words is "four million, three hundred ninety-four thousand, eight hundred ninety".