4093890 has 16 divisors (see below), whose sum is σ = 9825408. Its totient is φ = 1091696.

The previous prime is 4093883. The next prime is 4093897. The reversal of 4093890 is 983904.

It is an interprime number because it is at equal distance from previous prime (4093883) and next prime (4093897).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (4093897) 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, 68202 + ... + 68261.

It is an arithmetic number, because the mean of its divisors is an integer number (614088).

Almost surely, 2^4093890 is an apocalyptic number.

4093890 is an abundant number, since it is smaller than the sum of its proper divisors (5731518).

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

4093890 is a wasteful number, since it uses less digits than its factorization.

4093890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136473.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 4093890 is about 2023.3363536496. The cubic root of 4093890 is about 159.9725213227.

The spelling of 4093890 in words is "four million, ninety-three thousand, eight hundred ninety".