3909893 has 4 divisors (see below), whose sum is σ = 4210668. Its totient is φ = 3609120.

The previous prime is 3909889. The next prime is 3909907. The reversal of 3909893 is 3989093.

3909893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 889249 + 3020644 = 943^2 + 1738^2 .

It is a cyclic number.

It is not a de Polignac number, because 3909893 - 2² = 3909889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3909893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3909803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150368 + ... + 150393.

It is an arithmetic number, because the mean of its divisors is an integer number (1052667).

Almost surely, 2^3909893 is an apocalyptic number.

It is an amenable number.

3909893 is a deficient number, since it is larger than the sum of its proper divisors (300775).

3909893 is a wasteful number, since it uses less digits than its factorization.

3909893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300774.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 3909893 is about 1977.3449370305. The cubic root of 3909893 is about 157.5390748770.

The spelling of 3909893 in words is "three million, nine hundred nine thousand, eight hundred ninety-three".